Short
Catie was wise enough to rest the next two days. She always made a one-day pause going to the gym for efficiency. A longer break was reserved for more occupied days or not feeling that well. In this case, she rightfully judged her body really needed a break to recover and avoid longer injuries. She also decided for a cheat day in her usual diet, treating herself with some watermelon popsicles for her sore throat and tainted soul. Being degraded and name-called did moisture her groin but she was smart enough to respect the potential long-term effect on her self-esteem. Despite the recent intense sex, Catie was still frisky, loyally sticking to her promise to not touch herself while lingering with the arousing memories and her exaggerating fantasies about potential future endeavors. Jeremy wanted her so much that he cared to deny her pleasure.
Three days later, Catie was eager to work on her emotional tension from the lack of physical activity. On top of that, this late evening her denial time would be finally over. If she stayed long enough, she could use the Dark room again. Maybe Jeremy would contact her and take control again or enter her cabin by chance. She was sure he would take it one step further with her, whatever this was going to mean. Humming to the music in her car, Catie drove into the gym parking basement.
Catie’s first stop was the reception though, getting the formalities done. Her mood flourished when she recognized Ellen in her black tank top, still highlighting her strong back and arms. It turned out her personal trainer would handle her request as she currently did reception duty. It would be much easier to open up to her about any intimate question which might come up. The employee mirrored Catie’s warm smile, her long, brunette hair held tight in a high pony tail this time, swinging with every head turn.
“Hello Catie,” she greeted her assertively, “You look fabulous. How are you today?”
Catie couldn’t suppress a gleeful giggle. Her mind had gotten a bit fuzzy by a lustful wave again. She was not her typical, professional self but could still control herself enough to leave the hands on her hips. Her mood was excellent.
“Great!”, Catie replied in all honesty, but then looked around to make sure nobody accidentally overheard the talk with her personal trainer. She leaned to Ellen half whispering: “Another member messaged me and I met him. It was amazing!” She blushed in pure joy, not sure if she would have already shared such a secret on any other day: “And I have been chaste on his request since. I really have to control myself to not break my promise. Would you by any chance …?”
Ellen’s smile was resilient, as she continued her client’s question: “… have any advice? I think I got something even better, Catie.” She winked her over to have a look at the reception monitor, avoiding any risk to have anybody else get a glance even from afar. “This is a chastity belt.”
Catie’s mind recalled something about medieval ages, paradox to the futuristic looking, black underwear centered on the screen. It looked a bit clunky, more like a toy belt for kids playing superhero, but in a heavier, more serious adult version without the toys and a line through the legs from front to back as a surplus. Ellen maneuvered her hands on the touch display slowly turning the device to view it from all angles.
“You won’t find any more modern, sophisticated version of it on the market.”, Ellen explained, “And you cannot even buy this one. It’s not for sale and is going to remain gym property should to decide to wear it. We have versions for pussy pilots and penis pilots, but I guess you are only interested in the first one.”
Catie looked impressed but already had a myriad of questions: “And with this I can’t …?”
“… access your genitals.”, Ellen firmly continued her sentence, “Once you wear it, you cannot open it on your own.” She paused and her voice became official and dry: “Of course, any emergency service is able to cut through it, but I’d highly advice against it in anything else but a serious health threat, due to the damage claims you would have to deal with.”
Catie looked to Ellen as if she was a scolded student.
Now in contrast, the personal trainer returned to her usual friendliness: “Besides that, the gym app can easily open it as well, even remotely as long as the device and the app itself are connected by any means. Which means, you probably want to transfer that power to a person you trust. If you want, I could have it send to any member or members of your choice. You wouldn’t be helped much if you could open it yourself, wouldn’t you, Catie?”
Both ladies chuckled.
“Spot on, Ellen.”, Catie confirmed Ellen had understood her problem.
But thinking about, would she really want to give Jeremy that power after just a one-night-stand? Maybe he didn’t even want to fuck her again. Probably he would, but who knows? And what if he rejected her any time later, or she rejected him? No, she could still give him that power once their relationship had progressed to a more frequent interaction. So far, he hadn’t bothered her yet, and she hadn’t wanted to leave the impression she was chasing him. But who else she trusted knew enough about her sex life that she hadn’t to out herself in such an embarrassing way?
Catie looked at Ellen slightly wrinkling her forehead: “Could I give that control to you?”
Surprisingly, the personal trainer didn’t seem puzzled at all: “Of course, Catie. That’s even part of my job. As your personal trainer, it’s my pleasure to care for a good health plan for you, Dark room and extra training activity included.” She winked at her client. “Do you want me to set any maximum duration for the chastity?”
“What’s the usual, Ellen?”, Catie asked a bit puzzled, hoping the answer would be given to her.
“Oh, everyone is different, Catie. It’s not a competition. Some clients are very happy without any maximum, leaving complete control to the keyholder. Would you like that?”
“Ehm, yes, please.”, Catie replied, going with the flow.
“Of course, I can end your chastity any time, but I promise you, as a good service, I most likely won’t.”, Ellen added. “Shall I enter a random duration for the start?”
“Yeah, that sounds good.”, Catie agreed. She had no experience with chastity whatsoever, at least not conscious one. There always had been times, when she was too stressed out from work, not in a mood, or a health issue was blocking her libido for quite some time. How bad it could it be?
“Alright,” said Ellen, while tapping through dialogue pop-ups on the big display, further explaining: “You can access your chastity information through the gym app as well. I am sure you’ll find everything self-explaining, but just in case, you know I’ll always be there for you. Shall we put you into it now?”
“Here?!”, Catie asked shocked, looking around, being surprised at herself she even considered it now. So far, she was completely left unbothered in this gym even by any looks. Especially after having experienced the reason, she could imagine that would not change if she was naked. The staff in form of her personal trainer made her feel even safer though.
“We have rooms in the back for such matter. Please follow me, Catie.”, corrected Ellen and led the way, taking a glimpse behind to make sure she was being followed.
The room they entered reminded Catie of a doctor’s office: a doctor’s couch, several white cabinets fully exploited for an extensive number of various drawers, a simple desk with a computer, and several comfortable office chairs to roll around where needed.
“Please put your cloth there.”, Ellen pointed towards a seat while opening the cabinet and producing a physical example of the chastity belt she had shown on the monitor just a minute ago.
Catie stripped naked, not sure how much her top might be in the way of what other body parts might be involved. She had no problem giving Ellen view and access to her breasts she was quite proud about. The personal trainer smirked when she turned around to see her client in her birthday suit without even having instructed her. She mustered her from top to bottom, lingering on her well-shaped tits nearly too long, before she handed her the belt.
The belt shape made it was obvious what was front and top, so Catie stepped into and pulled it up, only for Ellen to push it tight and closing it around her hips and pelvis. This version had its belt designed to go around the waist instead of the hips, making it easier to conceal it but potentially less comfortable. Catie instantly noticed how flexible the belt was were needed though, while remaining stiff and unforgiving where it mattered to deny her any chance of access of sensation through the material. She couldn’t move or shift it now, feeling stuck tight into it, a strange kind of physical safety she had never felt before.
Her hands wandered over the device, feeling it on her the very first time. Her fingers got a weird metal-carbon impression running over the smooth surface and round edges. It seemed to be made out of one piece which she knew couldn’t be true with all the integrated technology advertised. Catie was still astonished there was no lock, screw, or bolt anywhere to be found. There was the loop around her waist, and then there was a connection front to center with a large shield covering her crotch but leaving a huge hole over her asshole, much wider than potentially necessary for doing big business. Apparently, someone had taking anal sex with big toys into account, which meant her ass cheeks were being spread wide though, a new sensation she still had to get used to.
“There’s no member or any man not fitting through”, Ellen explained, “And it also helps with hygiene. Please stand still for a moment. There’s a fitting procedure by the device to accustom itself to you.”
Catie was still impressed and felt like being in a Sci-Fi dream.
“Now, this might be a tight bit cold, uncomfortable, up to slightly painful, Catie.”, warned Ellen, “It’ll be over very soon. I have seen you endure worse in your sessions.”
A cool liquid pushed into her urethra, followed by something half-solid following it, causing a pinging sting. After a short distance, it stopped, and the feeling slowly faded into nothing.
“This is going to allow you to pee right through the belt, without any mess or hassle. The device is self-cleaning.”, Ellen explained, “But you are going to have to frequently go to the according station here for that and also for recharge. Don’t worry, I’ll show you the station later. It’s pretty self-explanatory, nothing you can do wrong.”
Some whirring behind the crotch shield unsettled Catie since Ellen hadn’t mentioned it.
She was glad when her personal trainer reacted: “The belt extends there to connect to your inner and outer labia and clitoris. Don’t worry, it’s quite softly attaching, kind of like a rubber or latex suit.” She watched her client focus on the sensation. “That allows for vibration or electric stimulation, depending on the control. You might like it, but even if not, you won’t have a choice if it comes to that.”, she remarked with a friendly grin.
The device seemed to have had finished, when Ellen produced her phone out of her pocket. With a tap, Catie sensed a very short vibration on her clit, then on her labia, giving her goosebumps. She glanced to her trainer. With another tap, she was zapped at the same areas. Though it wasn’t that painful, she still gasped.
“Sorry, Catie, I had to test if it works. Next time you’ll get it on purpose only, and frankly, probably never at such a low level.”, Ellen promised, “We’ll have some fun with the belt, making it worth it’s cost. Please dress now. Time to leave.”
Soon after, when they were back at the reception, Catie had composed herself.
Ellen had occupied her terminal again, looking at her client expectingly: “Since I control your belt now, you should give me control over your private schedule. Unlock your phone and hand it over, please.”
With a tiny hesitation, Catie obeyed.
While changing settings, the personal trainer explained smug: “You surely don’t want any conflicts of private appointments with your new training schedule as that would result in a punishment, from zaps to added chastity time. Also, I’ll add dates for your sleep time so you get enough, with exhaustive time in the Dark room planned in. Recovery is very important for a healthy training.”
Soon enough, Catie got her phone back, slowly realizing how much of a change she was in for, hoping for the better. Self-improvement was her big drive and the reason she had looked for a new gym in the first place. She couldn’t deny she had wanted to use the Dark room more often now, anyways. Being scheduled for it by her personal trainer added a different new excitement to it, she could feel tingling safely under the crotch shield.
“Anything else can I do for you today?”, Ellen tried to conclude the business for now.
Catie focused back on her actual reason to approach the reception. She was used to get things done in her life. “Eh…”, she had to laugh a bit considering the request she had after just being locked, “I’d like to sign the waiver.”, she stated clearly but quietly, “The one you mentioned for the Dark room unlock.”
Ellen now understood the joke and laughed with her: “I guess you didn’t anticipate locking yourself in chastity when you had this in your mind in the first place, right?”
“Yeah”, Catie confirmed, “But I still like to get it out of my mind, just for the future case.”
“Gotcha”, Ellen triggered the nearby printer with a few taps and put the result and a pen in front of her customer, pointing out: “Sign here, here, and here.” While Catie signed, only roughly looking over the paragraphs, the personal trainer explained in a serious tone: “For when you might have control over your sessions back, or whomever you might transfer it to, if the vaginal option is enabled, at the start of the session, a mounted dildo is going to enter your throat and squirt a liquid right into your stomach. It’s drugs prevent you from getting pregnant for a few days, just a precaution for any possible trouble. You surely understand.”
The pale blonde woman nodded affirmatively, being relieved to have one issue taken care of automatically. Outside of the gym, she usually had to consider that issue by either handling it alone or address the conflict with potential partners.
Then Ellen smiled again, adding: “Now that you signed the waiver, you also unlocked the option to get aphrodisiac shots this way, in any healthy amounts. Other liquids like sexual fluids can be administered as well, or something else if you are into water sports or other degradation, but that has to be organized in advance. I might get you a taste in the next few weeks while I am in control but it’ll be a surprise.”
Catie gulped about the prospect. While she might appreciate a little help with her arousal levels from time to time, as she did enjoy especially rough sex when she was in the mood. Now she was at the mercy of her personal trainer. It seemed she wanted to exploit her control, or was she trying to mind-fuck her at the moment? Noticing her thoughts and feelings, it seemed to work at least partly.
On the other hand, Ellen had been quite reliable and helpful so far. Besides the gym policies, Catie was sure she wouldn’t harm her in any way, quite the contrary. While she had a lot of discipline, as a strong, independent woman she would have loved to give up some control and just relax, as long as it meant she would still keep her excellent form and reach her ambitious goals. Looking at it that way, it seemed to be a potential win-win arrangement. Observing the posture and mimic of her personal trainer, Ellen seemed to enjoy providing this kind of service. If Catie ever had to submit to any woman, her tall counterpart was an attractive choice, positively dominating even in her current athletic outfit showing off her prominent back muscles.
“Thank you so much, Ellen.”, Catie fiddled with the pen, “That would be all for today. Quite much for a change, to be honest. But … I am looking forward to it. I hope you are not going to go too hard on me.”
Ellen just smiled with a cold confidence: “I am sure I’ll do nothing that you won’t be able to handle. You’ll be doing great just following simple instructions. Reward and punishment are great tools to get you into an even better shape. That’s what we do here at Dark gym.” She grinned, and Catie departed with an insecure smile back.
It was more than due to release some tension, and despite being strangely in the mood, with the belt giving her no chance to access her private parts for some pleasure, she was only left with physical exercise, also being at the perfect place for that.
Catie powered into her core muscle exercises, feeling her strong capabilities coming back to life. She was proud she could hold a Planck for a good while probably even with a heavy brick or two on her back. Though she never tried such impressive demonstrations, she felt highly confident about her body. She relished in that feeling at these moments of maintaining her muscle growth impulses. Strangely enough, the sensation of wearing a cumbersome belt around her waist faded away rather quickly. In between, she stretched her limbs far into all possible directions and combinations, much like trying to reach ambitious business goals. Catie saw herself as an overachiever, not only in her profession but in anything she attempted with a seriousness she loved. Fortunately, she had progressed, consciously letting go enough things so she had plenty of time to relax between her stressful strife. Today, she felt like it. Hence, she went a bit of an extra mile in every exercise, pushing herself not to her limit but clearly over her comfort zone, which gave her a great triumph about her whole training session at the end of it.
Overly satisfied with herself and genuinely happy, Catie went to the showers, serving her muscles with a cold treatment beneficial for recovery followed by hot water for relaxing body and soul. She could not ignore the strange belt she couldn’t undress, reminding her a bit of wearing diapers, so she tried to ignore it as much as she could. At least, nobody around her seem to look at her weird, if not take notice of her at all, pretty much like on the first day at this gym. She continued with two rounds of sauna and cold refreshment, each accompanied by a tasty virgin cocktail, funnily a Porn star Martini and an Angel’s Tit, twice deciding against an Orgasm she would often pick once if available.
Laying on a warm stone bench in the tepidarium, Catie contemplated on her current situation. Atypical for her separation of progress and leisure time, she looked at the calendar on her phone. Ellen already had established the new training dates, separating when she had to start that, shower and relax, and then as promised spend time in the Dark room. Contrary to her slack and irregular schedule before, which she usually made based on her work days, Catie now had training every other day, always scheduled with sexual activity. Her mind wasn’t sure how to assess that frequency but she also felt a light tingle under the belt shield. Fortunately, the new training schedule only started the day after tomorrow, so she was left alone for today with any extra activity. Actually, she could still choose herself which was even better. Catie started to like the thought that she still had control of her today. She certainly wouldn’t come in on her break days, even not just for the Dark room, while she already had to do it every other day.
That meant though, today was the last day she could decide on her own for a while. Would she want to dare another adventure in the Dark room now? Her mind wandered through her past experience, and then to that Ellen would control her options from now on, choosing what might be healthy or refreshing to her. Catie kind of liked the thought, but a sulky brat in her demanded a little rebellion just for today, exploiting the freedom she still had over herself for now. The drive to take the initiative while she still could easily gained traction in her. When she started feeling bored in her warm comfort, she had already decided to visit the Dark room immediately without having it scheduled. She already wondered how many and what kind of visitors she would receive, and how they would do her this time.
Catie wasn’t in a hurry but eagerly excited. By now, she was much more comfortable with the dark, high-tech, Tron-looking cabin, and the sophisticated touch-pad controls. It was almost a relief to her when the machine held her wrists and ankles tight, further securing her body at neck, shoulders, and hips, while leaving most of her naked skin exposed, restricting her to the current doggy style position. She already knew how easily the device could bend her in all kinds of positions and would if anyone or the program randomly chose to. Besides repeating her saved patterns including the wide ring-gag, a helmet was installed on the top half of her head, covering her eyes and ears.
Catie hadn’t felt like her younger self in ages, now being forced to watch and listen to her first session in here. The men’s faces slowly entering the room on the screen were too dark to be unidentified for real. They were recognizable enough as the actors in what was about to quickly become a porn clip around the center piece of attention. Except for her blindfold, Catie from a few days ago was much more focused by the camera and a bit of extra lightning, creating an almost professional setting.
While she enjoyed her audiovisual entertainment and her revitalized libido, her open mouth received a soft intruder. Now Catie remembered this option she had added to test how it would be before relying on it for inconsequential vaginal sex in the future. Unhindered through the ring-mouth gag, it entered her throat where it stopped for a moment, still easy on her compared to what she had to endure with Jeremy’s friends. She had to focus on the sensation to notice that it had squirted into her at all. Then the dildo left, leaving her longing for the experience to be pumped full of something this way. Now she was unable to do anything about it unless any visitors decided to fill her. She couldn’t even ask for it at the moment, so she could only hope to get back to the idea another time.
For now, Catie refocused on being bound in her position, forced to watch and listen. She knew as soon as anyone came in, if they started talking to her, it would overwrite the sound like a notification on her phone sweeping over any playlist. At least, that’s the way she had chosen it for the start. With the access given away, any user could change the setting if they wanted, keeping her deaf from anything going on around her, and possibly changing the input.
Soon enough, Caitie’s time alone was over. The familiar voice of her personal trainer Ellen sounded in her ear with the porn clip of her being fucked suppressed:
“My my my, who have we here?”, a much more personal, genuine voice addressed her, “You apparently didn’t want the rest I had generously given you, Catie.” Ellen had either held back in her employment role or played a completely new role now, scolding her helpless client: “You slut! Hadn’t your filthy mind anticipated that I would get a notification as soon as you entered the Dark room, or did you even long for it? Look at that juicy piece of ass in the air, just ripe to being used. What a pity that you are still in chastity, and anyways, you couldn’t wait but had to offer yourself today.”
Catie mumbled into the ring-gag, standing no chance to be understood.
“You think you got anything to say, fuck meat? Apparently not, so shut up and take it.”, Ellen mocked her with a hard slap reverberating on the exposed ass cheek.
‘This had to be roleplay’, Catie thought hopefully, as Ellen’s tone now became quite relaxed, quite contrary to how she had started.
“You are quite lucky though I am still around, my dear Catie.”, the personal trainer sweet-talked her, “I am already off the clock, so don’t expect any service from me.”
Catie sighed. Ellen would get her the day after tomorrow latest, but until then she might be off the hook. The screens fixed right in front of her eyes went black and the video sound stopped. No, actually there was a subtle background noise like a machine humming, still, different. Soothing in a way. It was easily overturned by Ellen’s steps circling around her, making her feel very vulnerable in her naked doggy-style position, giving her goosebumps.
“Did you know these rooms provide all sorts of implements, bitch? Though I have observed you endure quite a punch while being fucked, I wonder how you do when you are not penetrated in any hole.”, Ellen took her time talking.”
Then she paused for a while, teasingly wandering her hands over Catie’s exposed curves. “You might have encountered this in your sex life, but I’d rather doubt it. I’ll reconsider my evaluation once I witnessed your reaction.”
A sudden hit struck Catie’s back, leaving a nasty sting sunk deep into her flesh. She groaned into the ring-gag. Her tormentor burst in an evil laughter: “No, you haven’t!”
Another hit struck Catie’s ass. Apparently, Ellen’s surprise had taken her a bit off guard, having to consolidate before she could continue.
“All the more fun with less effort. Thanks for having me, slut.”
The cane hit bare skin again, this time several times in quick succession all over Catie’s body, ass, legs, arms, shoulder and back, and even slighter ones up her belly and to the side of her breasts.
“We might need to rearrange you, pain trainee. Can’t properly hurt your tits.”, Ellen considered, silently watching Catie fight her bonds in futile reaction.
Another female, husky voice interrupted her: “Is this the greedy bitch?”
“Yes,” Ellen replied, “May I introduce: Catie, this is Butch. Just finished her shift as well. Butch, this is today’s fuck meat.”
Smacking lips echoed in the room. “I see you already warmed her up for us. I haven’t poked a tourist in a while. She’s in for a good shagging with our strap-ons.”, Butch explained ignoring any consideration about their subject being able to hear them.
Another soft dildo shoved into Catie’s mouth, entering her throat farther then she ever had one before. It made her gag which didn’t help resisting it. She was already sinking it must have entered her stomach now when it stopped. It was clearly upsetting even before it retracted, only to violently intruded the mouth hole again. Butch rested her hands on Catie’s back, eventually grabbing her for some extra rough thrusts, ending with the dildo’s artificial balls pressing against Catie’s chin for what felt like minutes. When Butch retracted the dildo nearly out of her mouth, the helpless woman gasped for air, trying to catch up with all the breath she had missed.
“Time for some Eiffeltower.”, Ellen announced, “I guess you are also not familiar with a big, knobbed dildo pushing your shit-pipe, filthy pig. So much firsts today.” She chuckled and plunged it right into Catie’s high-up ass, mounting the machine’s purposed pedals. Catie could clearly sense the increased friction in her rear end before both her holes started to be pummeled mercilessly by the trainers.
In her front, Butch now grabbed her hanging breasts, squeezing them painfully hard, and then enduring a tight grip using it to lever her thrusting force. Catie had no clue about the time, but even with her experience from the recent gang bangs those two showed quite an impressive endurance even for their profession. Her stomach was clearly upset and her ass was burning from the inside as well.
Even after it stopped, Butch’s hand shut Catie’s nose and mouth at will, playing with the ability to totally take her breath, occasionally using her breasts as punchbags and choking her with a chuckle during the breaks.
Meanwhile, Ellen was busy switching her mounted dildo, explaining: “I am not sure if you gonna love or hate the next one, slut. You won’t have a choice anyway. This one’s special is the many equally sized beads over the whole length. It’s not so much their size but the quick succession. Have you ever hated being entered by a dick more often than necessary? Well, with this one, it’s gonna feel as if I rip you open ten times with every thrust, forth AND back.”, she emphasized gleefully.
It didn’t take long for Catie to make the promise experience, despite the distraction from her frontal abuse by Butch. It felt like a sex machine turned overclock, which would already been trouble for her pussy, but in her ass, it was pure ravage. When Ellen had finished her rear rampage after only a short while, Catie wasn’t even sure if her asshole was still located in a healthy position, only that it hurt like hell. She was far from feeling any pleasure, just pain and abuse.
Catie was relieved when Ellen announced an end to the sexual torture. “Enough for today. That was fun. Everything good has come to an end eventually. Might repeat it another day, won’t we, Butch?”
“Hell yeah!”, the other trainer responded enthusiastically, also sounding exhausted.
When Catie heard the audio feedback from Ellen tapping the touch screen, she was looking forward to being freed and resting. Instead, she was up for a rude awakening by Ellen announcing: “I am sure you’d like to quit this here and now, Catie. But it’s my choice. You will learn who decides when, how, and how much you are going to be fucked or not fucked from now on. No more solo adventures from you. When you are too horny despite what you receive, you may come begging to me. No need to confirm as this night will make you obey.”
And with more tapping, Catie’s fate for the night was sealed. Ellen had the courtesy to explain was she had coming: “I set up a sweet hypnotic file in loop for you. You might even enjoy it if you embrace. Unless you let yourself distract from the electric stimulation training you for enduring more pain of this kind. Once we are out of this room, the machine is going to stretch your ass for one more electrical pain point, and deepthroat you from time to time. No worries about tomorrow. You’ll be freed with plenty of time cleaning yourself up and getting ready for work. Maybe you should take one day off from work though, as a rest day before the training, you know, as I originally had intended for you. It’s up to you. See you in two days.”
With that she was left alone with the promised program for hours.
© 2026 C Sasha · All rights reserved
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