The Sexercise Class

[Sit back, relax, and suspend belief for a moment in this world where sex is far less taboo in public spaces than you may be used to. While our characters break a sweat, you don't have to lift a finger... unless, of course, you want to.]

"Want to go with me?" Cassie asked with a grin. "The flier says you need a partner for the class." Her curly, blonde hair blew across her face in the breeze as she looked up from the piece of paper tightly clamped in her knit gloves.

She and I were sloshing back to our apartment complex through puddles on the sidewalk after a rainy morning. We had just gotten done with our Sunday yoga ritual at the studio and Cassie had snagged a flier advertising a new class happening there on Saturday night.

"You want me to go with you to a sexercise class?" I asked. I just wanted to be sure she really knew what she was asking. Even though sex itself was not taboo and common in a variety of public places, we were just friends and I'd never done anything quite like that before.

Cassie laughed in her light and happy way. "Yes, Zoo! It would be FUN, and I know you need a little fun in your life!" Giggling, she threw me a playful sweater-clad elbow to the shoulder.

Seeing my shrug and bashful smile, she added, "I know you're more comfortable with group situations, but one-to-one between friends can still be fun." She looked down, pensively. "I've always wanted to bond with you more." Suddenly, Cassie shot out her hand to pinch my left boob and I quickly deflected her with my forearm, turning it into a playful fight. She shrieked and tried a few more times while I continued batting her away with my hands.

She and I were always messing with each other like that, joking about sexual situations and trying to pinch the other one. Of course, the only sexual circumstances between us had been group play at the club and not even really with each other. We dropped the topic of the class until we arrived back at the complex.

After a parting hug as we prepared to walk back to our own apartments, Cassie poked my arm and said, "Hey, let me know what you think by tomorrow? I might have to find another partner if you don't wanna go."

I sighed. If I had to be honest with myself, I was curious, and since she was clearly serious about it... "Okay, Cass, geez, I'll come with you!" I couldn't help but laugh.

Cassie squealed and hopped up and down, her baggy maroon sweater flopping around as she jumped. "This is going to be fun, Zoey-Zoo! See you Saturday, then!"

As I walked back to my place I could only hope that participating in a sexual exercise class with my best friend would actually be "fun," and not "totally mortifying."

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Cassie was already there when I arrived, ten minutes before the start of class. She had on a large blue sweatshirt and gray sweat pants that temporarily concealed her seriously amazing body. Even though I had never previously thought of her in a sexual way, I found myself getting damp with excitement leading up to the class. I knew I had a decent figure myself, but I had always been just a little jealous that she could look so fit and still have those gorgeous curves.

She had already put both our names down on the list to make sure we got in and paid our class fees. I realized that it was a good thing she did, seeing how many people had come out to "sexercise." Given that sexual events were on the upswing, especially in the city, it probably shouldn't have been a surprise to me that it was so popular. I myself had been to a fair few of them. Somehow, though, I had just never put sex and exercise together in my mind before.

After everyone was already in the room, the instructor entered. She was petite and feminine, with long, brown hair woven into a braid down her back. She invited everyone to take a seat on the floor, which was covered with thick tumbling mats. The room was warm, and although it wasn't nearly as hot as the Bikram yoga classes we liked to take, it was a welcome difference from the chilly outdoors. Without prompting, everyone began taking off any extra layers that they still had on, although it was clear that no one wanted to be the first to remove all of their clothes.

Cassie, though, was already down to her sports bra and the smallest shorts I had ever seen. She sat cross-legged on the mat next to me and was looking around the room excitedly. I just was trying not to stare at her, and to breathe properly, as I envisioned what was about to happen in class.

"Thank you all for coming today! My name is Rochelle, and this is a new series of workout classes we will be offering here. Today's class, as you all know, is a partner-based workout, but we are also going to start up some single participant options as well in the near future." She clapped her hands together. "Now, has anyone here been to a sexercise class before?" The instructor gave off a vibrant and energetic vibe, and although her words were very professional, she appeared to be very excited about what her students were in store for.

Only about three people out of the twenty-six or so in the room raised their hands in response. Cassie and I were not among them.

Rochelle nodded. "We're all pretty new to the concept today, then! Okay, so here's how it's going to go..."

She went on to explain to us that class was 60 minutes long, but the first 15 were more for setup and the last 10 were for a "cool-down" and clean up, and that water breaks were included throughout. During the class, we would trade positions from who was on top and who was on bottom. As partners did not have to be opposite genders, sterilized strap-ons were offered for whoever was "topping" if they did not already come with the proper equipment. Rochelle directed us to a box where we could grab such equipment before saying, "clothes to the back of the room!"

The room rustled as the last bits of clothing came off and were laid or tossed to the back corners, and everyone re-situated themselves in their places. Although I'd seen her naked at other sex events, I'd never seen Cassie with as much light, or quite as close to me as this. Her boobs were on the smaller side, but perfectly shaped, and she had defined arms and abs that I could not help but straight out stare at for a moment.

Cassie caught me gawking and gave me a little sideways smile. Her hand shot out to pinch my nipple, and I was so caught off guard I didn't even make a move to deflect. I laughed and shook my head at her, as the fitness instructor started some "workout music."

Keeping with the lighthearted, and very adult, theme, the playlist was made up of popular songs that were remixed to maintain a higher energy with a consistent beat, but were almost all sexual-themed with plenty of colorful words and phrases. Rochelle dimmed the lights and told us that we were going to get warmed up.

Although I had honestly expected a more physical warm up, like squats or something, it seemed the instructor meant a more sexual warm up. She asked us to stand and face our partner, and introduce our hands to the other by rubbing them up and down gently, all over their body. Oddly enough, I felt that this would have been far easier for me to do to a complete stranger than to my best friend, yet, here we were, gingerly placing our hands on the other's shoulders.

We couldn't help but laugh at the absurdity, but even as we giggled, Cassie moved her hands to my breasts, then my stomach, and then my hips. I followed her lead, in awe of how such a simple act could feel so erotic. A tingling sensation quickly built between my thighs, anticipating touch there in the near future. I didn't have to wait for it long, because the instructor was moving us in that direction already.

"Time to say hello to your partner's genitals! Let's get them ready for the workout, too!"

Cassie, again, was the first to make the move. She trailed two fingers down my sternum, over my belly-button, and right to my dampening labia. Her apparent eagerness made me wonder if she had been thinking about doing this sort of thing for a while. It was a shockingly delightful feeling to have her delicate fingers pressing upward, slowly exploring the area with curiosity and excitement. I felt a thrill to see her looking directly into my eyes with her own greenish-blue ones. Her smile had diminished and left in its place a subdued look of arousal.

My right hand slowly moved between her legs as well, and I found that it was just as erotic for me to sense how wet she was becoming with my own fingers. For the first time, my fingertips traversed my friend's soft folds and found the hard nub of her clit with my thumb. She let out a small moan and closed her eyes when I did that.

I could see, through my periphery and the occasional glance over Cass's shoulder, that the others in class were getting into it, too. I was glad to see such a variety of people there, and I wondered silently which pairs were exploring each other for the first time today, like we were.

The whole warm-up probably only lasted five minutes or so, but it looked like everyone was really ready to get to the action at that point. Rochelle instructed us to go back to the floor and that the person who would be penetrating on the first round should be on top. We were told that we would switch halfway through class.

Cassie was already on her back on the mat, looking up at me with a smirk that said something like, "show me what you got." With just a touch of nervousness, I put on my borrowed strap-on and waited for the next step. Rochelle turned up the music so we could almost feel the beat through the walls and floor, and over her microphone, started giving us instructions.

I was a good student and quickly fell into performing the moves along with everyone else. After the initial thrill I felt while slipping the dildo into Cassie's slick opening and seeing her response, I started to actually get into the rhythm of the class. All of us on top were currently in some version of a runner's lunge, with one leg over our partner's, and the other kneeling on the mat, and used that position as leverage to push our hips forward toward our partner on the floor. Meanwhile, our partner would counter the movement with their own upward thrust.

The pace of the class was fairly quick, and seemed to change along with the music. The instructor was telling us to switch the lunging leg, now get into plank position, now kneel on both knees with the partner lifting their hips into a bridge position. The thing I hadn't anticipated about the class was that trying to keep someone else's rhythm during a sexual encounter was, in a sense, freeing. Because we couldn't necessarily stop or switch things to do what we felt like, and no partner could take "control," we were at the mercy of the music and the instructor. I knew that this meant we might cum at any time, or not at all and just get a sweat on instead.

It took some focus to keep up with the moves and the beat of the music, but I realized they were more or less choreographed like a dance class to repeat multiple times throughout the songs. Once I got the hang of it, I was more able to relax and hone into the sensations I was getting. The strap-on had a small silicone piece that hooked up and inside me at the same time, so each time I pounded into Cassie, my G-spot got pounded back. I felt little shocks of pleasure every time that happened, and felt my pussy becoming more wet by the minute.

Just as exciting, I thought, was the visual aspect of being in a class full of other people experiencing similar things. That was one aspect of group sex events that I always loved; I felt that the energy from the others' excitement overflowed to increase my own. A pair of men in particular caught my eye at the moment. I couldn't tell if they were two friends just experimenting or a couple, but even in a fitness class-type setting, with so much going on around, they seemed very trusting and tuned in with one another. And, hot damn, they were both extremely nice to look at.

"Annnnd bottom partner on all fours! Flip it over!" The instructor was demonstrating the position herself in the front of the room. Cassie quickly followed her lead and got on her hands and knees, facing the instructor. Seeing the opportunity for a little revenge-move, I slapped her smartly across the ass. She snapped her head back at me with a look of mock horror. I giggled and mouthed back, "got ya!"

With that, I pushed my faux-cock into her. Her eyes immediately rolled back in pleasure and she broke into a grin just before relaxing her head down onto her forearms on the mat. I was still partly in wonder at the fact that I was actually behind my best friend, naked and holding her hips. Her blonde curls were falling down around her face in front, and I could just hear her heavy breathing over the music.

The class was picking up its pace again and we went through a few moves from behind. The instructor had the people in quadruped position thrusting backward into those on their knees when I heard the first person in class begin to cum. I looked over. It was the man on bottom in the pair I had been admiring, and he wasn't trying to be quiet as he spurted onto the floor beneath him. His partner was grinning behind him as he continued to thrust himself backward onto the hard cock.

"Hey, way to go!" the instructor shouted into the microphone. "Getting your workout in feels good, right class?"

The pumping music continued but everyone in class who had free hands clapped. I was amused to see that some clapped normally, and some just used their hands on their partner's ass cheeks.

The energy in class continued to ramp up. We moved to a more challenging position, with the person on the floor moving to down-dog and the person behind having to squat slightly to get in. It took all of sixty seconds of this for my thighs to start burning and I could only imagine Cassie was having a tough time here as well.

And then I heard her start to cum. At first I wasn't sure if she was just making complaining sounds about the position, but then she got louder, and I could see liquid beginning to drip off her elevated puss and onto the mat below. I was honestly astonished. I knew I would never have gotten off from behind, let alone with my arms and legs burning from a prolonged down-dog, but I was also extremely turned on by the fact that she could.

Cassie was shaking. I withdrew from her and she slowly sunk down to the floor. I put my hand on her back to make sure she was okay, and she rolled over to face me with an elated and breathless look on her face. We both broke out into laughter.

"You guys okay, there?" Rochelle said into her microphone as she strode around the room. We both gave her two thumbs up. "Awesome! Nice job, you two, good hustle," she chuckled, clapping for the latest class orgasm.

"Time to take a short water break, grab a towel or two if you need one, and we will switch for the second half in a couple minutes!"

It was clear that everyone did need a break - we were all dripping, mostly with sweat, and the already warm room now felt like a steam room. A few people even cheered when the overhead fans got turned on. Despite the sweaty bodies, though, it was clear that the class participants were excited for the next half of class. I spied a couple men in the room stroking themselves back to full hard-ons in preparation.

When we had all put our drinks away and re-positioned ourselves in our places, Rochelle told us that the roles would be switched and those of us on top for the first half would now be on bottom. I followed suit laid on my back, along with half of the class, and looked up into Cassie's gorgeous face. Her breasts looked so soft, dangling gently toward me as she leaned over. Her stomach was taut from all the yoga and Pilates classes she took, but her ass and thighs appeared beautifully round as she sat there on her heels. The edges of her mouth curled upward and she winked at me.

Once again, it seemed like we got back into the rhythm of class quickly. In no time, Cassie was mounting me to ride my cock-shaped toy. Those on top were in a frog-like position, bouncing in a low squat, while the ones on their backs tried to bridge upward to meet their partner. The base of the music vibrated through my back. It sounded like something you might hear at a strip-club, but maybe just a little more upbeat. Through the music, the sounds of people gasping and panting were audible. It was difficult to tell if it was from the exertion or the pleasure.

It was definitely a workout. My glutes were on fire! Fortunately, we changed positions before I couldn't take it anymore, and Cassie got to move back to hands and knees over me. I heard the music speeding up, and the instructor gleefully announced that it was time for a little "speed drill."

"Interval style! You have 60 seconds on, 10 seconds off. Four rounds. Top person goes as fast as they can. Bottom person holds their partner's hips and maintains a crunch position. Ready? Go!"

Cassie took off. Her curls and boobs were bouncing over me as she rode my strap-on like she was in a race, her eyes tightly shut and lips parted. The visual was really exciting. I started feeling a lot wetter between the thighs, and noticed that the friction between my clit and the back side of the dildo was beginning to feel really good. I dug my fingers into her hips and my toes began to curl. Suddenly, a bell sounded. The first round was over.

We both breathed heavily and grinned at one another during the short break. I noticed all the other pairs were doing the same thing. It looked like some of them were being stopped just short of something spectacular.

The bell rang. Everyone on top started riding fast again. In just a few seconds, someone was already crying out in ecstasy. A curvy woman with long, dark braids toward the front of the room was cumming hard mid-sprint on top of her partner. Fuck, that was hot. We both couldn't help but watch, but Cassie tried to keep her pace. Then, to my left, near the back, a man on the floor couldn't hold back either. Mouth open, eyes closed, and back arched, seemingly involuntarily, he pulled his partner down on his dick. He thrust deep twice more and went limp.

"Five seconds to go!" the instructor called out.

When the bell sounded, we all stopped to clap for those who had reached their climaxes and catch our breath. We were all instructed to try and keep going even if we had already cum or were going to in the last two rounds.

"You might find that you can go longer than you think today!" Rochelle said with an encouraging smile.

At the beginning of the next sprint, I could tell that I was already close. Cassie seemed to notice. She kept up her speed but watched my face intently as my breath became ragged. My face felt flushed and the tingling sensation around my clit and vagina was increasing by the second. No more than thirty seconds into the round, I began to cum.

I know that I am not a screamer, so I am sure I didn't call the attention of everyone in class, but the pent up pressure within me brought forth a minor waterfall, drenching the mat below. I shut my eyes tightly for the massive release. My vagina clenched over and over on the small nub of the strap-on. For the last half of the round, I gasped for breath and felt my skin slide in the small puddle I had just made.

When the bell went off, I opened my eyes to see Cass looking down at me with a look on her face I had never seen. She slowly leaned down and gently kissed my lips. It felt both new and yet somehow familiar.

Before I had a chance to process this, the final round was already starting. I followed the directions we were given and tried holding the crunch while holding my friend's hips as she pounded quickly into my silicone dick. My abs were burning, but the heat was rising between my legs as well. Before I knew it, I was about to cum again.