Barbara’s face twisted in concentration as she pushed as hard against the gym leg press, straining her defined quads to lift the 250 lbs of weights on the other end. She knew a few ounces of effort now would pay off big later when she could flaunt her perfectly sculpted butt off to her boyfriend. That’s why she loved to come to Diane’s Gym on ladies’ night. No muscle-headed men mansplaining about her ‘optimal regiment’ or grilling her over how many grams of protein she had in her diet.

Just her, her girlfriends, and all the juicy gossip she could stomach.

“You got it, Bar! Just a few more reps!” Jodi said as she sat on a nearby bench, working her bicep curls.

“You heard that Valorie’s husband almost made her quit the gym, right?”

Barbara blew out a strained breath through her puckered lips, brushing a sandy blonde lock out of her face.

“No shit? What’s his problem?”

“I dunno. Something about her spending too much time away from home and turning too many heads.”

Barbara glanced across the gym at Valorie, the tall, muscular black woman working away at the rowing machine.

“So, what happened?”

Jodi smiled, a gleam in her baby blue eyes.

“She says she just stripped and showed her husband the pay off. After a night of wild sex, he was suddenly a lot more agreeable.”

Barbara chuckled, struggling to stay concentrated on her leg presses. She imagined how “agreeable” she could make Kyle, her boyfriend, after she got that perky, fit, bubble butt she always wanted. 

Just a few more reps.

BIIIINNNGGGG….

The tone sounded from the gym loudspeakers. Every woman across the gym, a group of a dozen or so, immediately stopped what they were doing. Barbara felt the tone resonate through her core and fill her with a deep sense of peace.

“Treadmill time!” Jodi said, standing up with a glassy stare. Barbara let the leg press settle down with a loud CLANG and rose to her feet, joining the rest of the women as they flocked to the treadmills set up in the back of the gym. The machines were arranged in two rows of six, and Barbara took her usual place in the center of the back row. Standing directly in front of her was Maria, the curvy Latina girl who was at least a head shorter than Barb. Valorie took the treadmill to Maria’s left while a willowy red head with long, slender legs took the machine to her right. The ladies all settled into their respective places, pausing to hydrate and stretch out their calves before commencing with the group workout.

“Finally, time for some cardio!” Jodi said as she hopped up on the treadmill next to Barbara. “I always feel so refreshed after treadmill time.”

Barbara had to agree, although the more she thought about it, she realized she could never completely remember what happened after her time on the treadmill, only that she felt refreshed and energized and ready to show off to her boyfriend.

All at once, the treadmills came to life, making the women walk at a brisk, yet comfortable pace, just enough to keep them walking without breaking into a jog. The girls continued to joke and gossip with each other as they watched the displays on the treadmill count the calories they were burning.

Barbara tried to pay attention to Jodi droning on about her heart rate, but the more she walked in her steady, brisk pace, the more her mind began to wander. Her eyes started drifting down to Maria’s spandex-wrapped ass, pumping back and forth with every step. Whenever she caught herself staring, she tried to refocus and lift her eyes to the motivational posters on the walls, but the more she walked, the more her eyes would slip back down to Maria’s bouncing butt like gravity.

Eventually, Jodi’s ramblings faded off, the bleach blonde’s gaze similarly captured by the red head’s long legs in front of her. As the walk continued, each of the women fell silent, subconsciously syncing their gaits and walking each step in perfect unison. Barbara gave up trying to keep her eyes off Maria’s plump rear and just let herself smile as her body drifted along to the beat of the march.

Left…right…left…right…

It felt so soothing to just follow along, surrounded by beautiful women all swaying and walking in unison. She could just watch the delicious booties in front of her pumping back and forth and just let her mind wander.

The group of women continued to walk silently in place, each of them stretching one shapely leg in front of the other, gliding over the well-oiled tracks of the treadmills, until finally the back door opened. Barbara’s eyes barely flinched as Diane Sheperd strode into the gym floor. Twelve heads swiveled to the diminutive, olive-skinned woman with dark, piercing eyes.

“Good evening, Mrs. Sheperd!” The women sang out at the same time. Barbara chirped out the greeting, feeling a rush of euphoria. Mrs. Sheperd was such a wonderful trainer. She always felt so motivated when she listened to Mrs. Sheperd.

“Good evening, ladies,” Mrs. Sheperd returned as she took her place directly in front of the women walking slowly in place on their treadmills. Barbara finally found the impetus to drag her eyes away from Maria’s bouncing butt to stare at Mrs. Sheperd, dressed in a form-fitting black leotard. Delicate crow’s feet bordered her large eyes, and a streak of gray ran down her voluminous dark hair, but Mrs. Sheperd radiated vitality. Barbara could feel the older woman’s energy infect her, making her feel like she was floating along a gentle stream rather than burning calories on the treadmill.

“I’m so happy to see all my lovely ladies keeping to their workout regiments. You are all so disciplined, so motivated to be in the best shape you can be.”

“Thank you, Mrs. Sheperd,” Barbara sighed along with the other women. She loved being praised by her trainer.

“Very good,” Diane smiled as she reached behind her neck and unclasped her necklace, a long silver chain with a slender crystal on the end, the color of a velvet summer night’s sky.

“Let’s work on some motivational affirmations, shall we?” She let the chain slip through her fingers until it dangled from her upheld hand all the way down to her navel. Slowly, it began to sway back and forth, side to side, and Barbara found her feet automatically slowing down to match the sway of the crystal pendant. If it ever crossed her mind that her treadmill was slowing down too, without her telling it, the thought slipped straight out of her head as she easily put one foot in front of the other.

Left…right…Left…right…back…forth…back…forth…

Again…and again…and again…

“Repeat your affirmations, ladies,” Mrs. Sheperd said with a wide grin. “You feel happy and relaxed…”

“We feel happy and relaxed…” the women droned in unison.

“You are healthy, fit, attractive…”

“We are healthy, fit, attractive…”

It was true! Barbara never felt this good about herself in her life. She felt happy, fit, and oh so attractive.

“You love yourselves…you love your bodies…”

“We love ourselves…we love our bodies…”

“You love listening to me…My voice is so motivational…It is so easy and pleasurable to follow my instructions…”

“We love listening to Mrs. Sheperd…Mrs. Sheperd’s voice is so motivational…It is so easy and pleasurable to follow Mrs. Sheperd’s instructions…”

The words bubbled out of Barbara’s mouth. Every word she said immediately became the ultimate truth. She did love listening to Mrs. Sheperd. She was so motivational. Listening to her made her get warm between her legs.

If Barbara, as well as the rest of the women, hadn’t been completely fixated on Mrs. Sheperd and her motivational crystal, she might have noticed how Jodi was beginning to develop a dark, wet stain in her gray yoga pants, or how Valorie’s mouth parted just slightly as her heavy eyes dilated. Anytime she began to think too hard about how strange it was for her and her girlfriends to mindlessly repeat their trainer’s instructions, the slow, steady, monotonous beat of her march gently rocked it out of her head.

“Good. Very good, ladies…” Mrs. Sheperd purred. She continued to gently swing her pendant as the women stared ahead blankly.

“Feeling so good. So healthy and powerful. You are so proud of your bodies. You’ve worked so hard to make your bodies as fit and attractive as possible. You want to show it off, ladies…”

“Yes, Mrs. Sheperd…” The women chanted.

“You want to show off for you partners. You want to show off for each other. You want to show off to me. Take off your tops, ladies.”

Barbara felt her arms move on their own, peeling off her spandex halter top and letting her full breasts tumble free without missing a step. The rest of the women followed along, even Margot on the last treadmill in the back, her massive D-cups swaying back and forth over her plus-sized frame. Barbara resumed staring vacantly ahead at Mrs. Sheperd’s swinging pendant, something in the woman’s gleaming eyes making her exposed nipples hard and stiff.

The women strolled along almost in slow motion, their weight slowly shifting with each step, shifting with the swinging pendant. Mrs. Sheperd beamed at them.

“Good. Very good, ladies. You are doing so well, following all my directions so easily. So obediently. Let’s work on some arm isometrics, yes? Let your arms stretch out in front of you. They are getting so light and floaty. The more you walk, the easier it is to listen and obey Mrs. Sheperd.”

“obey Mrs. Sheperd…”, the words echoed like a chorus.

Barbara felt her arms begin to drift out in front of her.

“The more you walk, the more you sink. The more you walk, the less you think. The more you walk, the more you sway. The more you walk, the more you obey…”

“The more we walk, the more we obey,” Barbara heard someone say in her voice. She let out a deep sigh as her arms brushed past the sides of her boobs and floated straight out in front of her.

“Good job, girls!” Mrs. Sheperd leered. With the hand that wasn’t swinging her long, shiny chain, she reached into her fanny pack and pulled out a pink smartphone. “Arms stretching all the way out in front. Stepping to the rhythm, nice, and happy, and sexy now. That’s right… seeing the swinging pendant in front of your eyes now, following along step by step, back and forth, left and right…”

Diane Sheperd dropped her dark violet gem and the silver chain back into her hand and slowly walked around the treadmills, admiring her troupe of entranced beauties silently walking in place like a group of topless zombies. She bit her lip in excitement to see twelve pairs of breasts swinging in time with each other as the women marched forward with glassy eyes and stiff arms. She opened up her phone and took her time taking picture after picture of the hypnotized sleepwalkers, making sure she got individual shots as well as plenty of group shots and side angles.

Finally, she came back to the front of the room, taking one last video of her enthralled clients. She switched apps on her phone and turned down a digital dial. The treadmill for each woman whirred and slowly came to a halt, their entranced occupants matching the change and standing still on two feet, their arms still floating in front of them.

“Excellent work, ladies.” Mrs. Sheperd said in a silky voice. “Just think all those calories burned. You feel a rush of endorphins pulsing through your blood. It’s making you hot. So unbearably hot and bothered. You feel like if you don’t do something soon, you’ll faint from the heat. Standing so still and motionless…but so hot and exhausted…your arms are so tired, their burning with the heat…you can’t let the down…just breathing through the pain, girls…”

Barbara felt like she was in a dream, or maybe a nightmare. Her arms were lead in front of her. Her shoulders and trapezius ached to let them drop to her sides. She felt like she was on fire, mostly a fire that burned in her legs, making her want to squirm and grind her thighs together. But she couldn’t imagine letting them drop…until…

“Dropping now, girls. Your arms sink to your sides as you sink under my influence. Now.”

SNAP!

Barbara let her arms drop and her eyes slammed shut. She teetered on her legs but kept upright. She had been trained too many times to collapse on the floor, but her mind plummeted down through the depths of Mrs. Sheperd’s seductive voice and straight into her pussy. She heard the muffled sighs and moans of the other women as they also let their arms flop to their sides and surrendered deeper to their hypnotic trainer.

“So deep for me now…So ready to listen and obey your beautiful, sexy trainer.” Diane cooed at the ladies. “You will listen to Mrs. Sheperd…You will obey Mrs. Sheperd…Her training makes you feel good…makes you feel sexy…you never miss a ladies’ night with Mrs. Sheperd…you need to attend ladies’ night with Mrs. Sheperd…if your partners complain, think about all the fun ways you’ll convince them…you will use your bodies to seduce you partners…make them pliable…make them passive…and if they resist, then you will send them to Mrs. Sheperd so she can explain things…”

That only had to happen once, Diane mused to herself. The time when Maria’s girlfriend, Tanya got suspicious and cornered Diane after closing hours. It all ended well, though. In fact, she was standing on the far left of the room, her pretty head slumped slightly on her creamy shoulder as she drifted deep in trance. She wished more of her flock brought her new clients as stunning as that.

“Okay, girls. Time to lose the pants. Stripping everything away now. Completely naked and exposed before your trainer, now.”

Without a single concern, Barbara let her hands pull down the elastic band of her pants over her supple, round hips. She felt the cool air tickle her pussy lips, and she smiled just a little wider.

“Very good, ladies. Now follow me.” The older woman led the nude, smiling beauties to a special corner of the gym. A ring of twelve thick yoga mats lay in the middle of a wide open space. Mrs. Sheperd stood in the middle and swished her finger around and around, corralling the women into a wide circle, each of them no more than a foot from their neighbor. Barbara stood between Jodi and Valorie, the tall black woman standing a good six inches above her.

“Time to bring our time together to a close, my lovelies,” Mrs. Sheperd said in her dark, silky voice. “But first, a few final exercises to see you off. Let’s start by standing nice and stiff to attention. Hup, hup!”

She clapped her hands and Barbara and the other women immediately tightened their butts and lifted up their chests, their muscles flexing in rapt obedience. Across the circle, Barbara watched the other ladies squeezing their thighs together and pushing out their tits proudly, a colorful assortment of erect nipples staring back at her. Each of the women held the same wide-eyed, blank, and happy expression, their eyes as empty as their heads.

“Hold it, hold it…a few more minutes…squeeze real tight ladies!”

Mrs. Sheperd was walking around the circle, snapping pictures of the enthralled women as they flexed and presented their stunning bodies. Barbara never paid it a second thought. She loved to show off her body for her trainer.

“Squeezing tighter and tighter, girls…feeling all the tension draining down, down, and down into your pretty pussies. Your cunts are getting wet the more and more you squeeze…You can feel yourself starting to drip…filled with so much tension…so much love for your wonderful trainer…Tell me that, ladies.”

A chorus of breathy moans rose up from the ring of women. “Ughhh…we love Mrs. Sheperd!”

“You trust your trainer…squeezing harder and harder…”

Barbara felt like her pussy would explode, but instead it just began to glisten and flush slightly pink. The redhead next to Maria had her eyes closed and mouth open as a trickle of pussy juice began running down her thigh.

“…mmm…we trust Mrs. Sheperd!”

“You obey your trainer…You love listening to her every word.”

“We obey Mrs. Sheperd! We will listen to every word she says!”

Diane Sheperd breathed in deep, the mewling sounds of her class ringing like an auditory aphrodisiac. She opened a timer on her phone.

“Excellent, ladies…you are feeling so much love for each other…squeezing tighter and tigher…going deeper and deeper…getting wetter and wetter…unbearably hot and horny now…”

Barbara could smell the musk of hot cunt in the air, and it made her mouth water. She wished she could get off so bad!

“Now, at the count of three…you will release your muscles and give your fellow classmates a nice, helping hand for your trainer…being so nice with each other until you hear the ding of my phone…ready?...3…2…1…Release now!”

Barbara and the other ladies moaned as their muscles finally relaxed, flooding them with a rush of warm, gooey pleasure. Before she could recover her senses, she felt Jodi’s hand reach over and hone in on her needy clit. Valorie’s hand brushed over her exposed butt and began groping and squeezing her glutes, the tall woman’s slender fingers probing the bottom of her labia from behind. Barbara closed her eyes in rapture and felt her hands drift up to stimulate Valorie’s cunt while the other pinched and squeezed Jodie’s nipple.

All around the circle, feminine hands were teasing and fondling each other’s bodies, gently swirling around glistening pussies, holes, and nipples. Margot was getting her giant tits expertly groped by Maria while the svelte Japanese woman, Sara, pinched and teased the larger woman’s very long, very erect clit. The relentless group assault on their erogenous zones dragged on and on, as the women cried out almost in harmony.

From outside the circle, Mrs. Sheperd watched, her phone camera running on video in one hand, while the other reached down and teased her own shaved pussy through her panties. She smiled and bit down on her lip, feeling as much joy from the ecstatic, sapphic fondle fest as the rest of her flock. She left them there, all twelve of them, dangling on the verge of release, each of them both captivated by and capturing the others in an endless chain of sexual gratification.

Mrs. Sheperd finally caught the telltale sign of tremors starting in some of the women’s legs. Diane was known as a tough trainer, but she was never cruel. She waited until the group passed the ten-minute mark.

“Surrendering to the pleasure now, ladies…You’ve done such a hard workout today…made your bodies into the sculpted works of art they were meant to be…the kind of bodies that will keep your boyfriends, girlfriends, and husbands too hot and horny to ask questions…getting ready to give yourselves a wonderful treat now…Letting your friends, your beautiful friends, lead you into a wonderful, delicious orgasm in 3…2…and…1. Cum for me, ladies!”      

Barbara’s knees buckled as her body erupted in pleasure, her voice singing in wild abandon. The orgasm gripped her body like the coils of a magnificent snake, squeezing her in rapturous euphoria. The faces and bodies of the women across the circle from her contorted into masks of ecstasy. Margot began squirting hard onto the gym floor as she gripped the shoulders of Maria and Sara for support. The cries of pleasure echoed off the gym wall, making Diane very happy she had paid extra for the building’s sound-proof insulation.

One by one, in a great rippling wave, the women closed their eyes and gently dropped back onto the thick yoga mats laid out behind them. They lay themselves back supine and let the warm curtain of sleep take over their minds, the words of their trainer softly echoing on their lips.

Mrs. Sheperd, recovering from her own climax, stretched herself and walked proudly around and through her slumbering pets. They knew to drop deep into dreamland at the end of their session thanks to weeks and months of hypnotic conditioning. She didn’t need to issue any more commands for them. In about twenty minutes, the first of them would begin to wake up, get dressed in a blank and satisfied haze, and go back home with the specifics of her training sessions neatly blotted out from her memory. All her special ladies would only remember that they had the best trainer in the world, and they would always come back the same time every week to continue working on their bodies while she worked her magic on their minds.

Diane Sheperd sauntered into her office and began uploading all the sexy pictures and videos she had taken of the women onto her personal Patreon page. She had a ton of very enthusiastic viewers who were paying through the nose to see her content of shapely, sleepwalking women prancing around her gym naked and obedient to her every word. It wasn’t cheap to keep her gym up to date with all the latest equipment, and the revenue her mind-controlled treadmill zombies brought in made up for the shortfall in no time.

She smiled and waved to the milfy blonde, Barbara, as she wandered out of the gym with Jodi in a daze, ready to go home and share her new confidence with her boyfriend, Kyle. Her training sessions would always be free for her select class of hotties, but that didn’t mean they couldn’t still earn their keep.