The Clinic That Promised to Change Me Forever
My name is Marta, and the first thing I learned to do well in life was hide. At eight years old, I hid under the dining table when visitors came over. At sixteen, I hid behind baggy clothes. By thirty-four, I had turned it into an art: in photos I stood next to the tallest people, at gatherings I looked for the chair pressed against the wall, in the gym locker room I changed in the closed cubicle even when no one else was there. My body—one meter sixty, black hair down to my shoulders, a weight I didn’t dare say out loud—had become the center of a war I had been losing for years.
I had two things that kept me from sinking all the way. Rodrigo, my husband, who looked at me in a way I never fully understood, as if he saw something I couldn’t find in the mirror. And Nicolás, our ten-year-old son, who every night asked me to tuck him in and asked how my day had been with the same seriousness adults use when they ask important questions. They were my reason. But they weren’t enough to silence that voice.
That Tuesday morning, after dropping Nicolás off at school, I took the long way to nowhere. Rodrigo was at the office. I had four empty hours and the certainty that if I went straight home I’d end up in front of the bathroom mirror doing what I always did: looking at myself, hating myself, eating something I shouldn’t to stop thinking, hating myself more. So I walked.
The sign was stuck to the window of a place that had once been a pharmacy. Black letters on a white background, no ornamentation: “Centro Horizonte — Real Transformation. Discipline. Results. Call today.” A phone number and nothing else. No before-and-after photos, no prices, no fake-model smiles. Just those four words.

I took out my cell phone before I could think about it.
—Centro Horizonte, Claudia speaking. How can I help you?
—Hi, I... I want to lose weight —I said. My voice felt smaller than I was. —I’ve tried everything. Diets, nutritionists, support groups, pills. Something works for a while and then it all comes back. I don’t know what else to try.
—I understand completely —she replied, with a calm that wasn’t warmth but something else, something more like efficiency. —At Centro Horizonte we work with methods most clinics don’t use. They’re unconventional, yes, but the results are consistent. Do you have a few minutes right now?
I said yes, standing on the sidewalk with the sun on my back.
—The program lasts twelve months. During that period, the participant resides in our facility. Contact with the outside world is limited to one weekly video call with family. The discipline we apply is based on physical and mental control techniques derived from BDSM: physical restraint, sustained exertion, and a system of positive and negative reinforcement that works simultaneously on the body and the psychology. The condition is total commitment. There is no possibility of early withdrawal. Once admission is signed, the participant completes the year.
It took me a moment to answer.
—Without being able to leave at any point?
—That’s right. It’s the only way to guarantee the process. I’m going to send you informational material to the number you’re calling from. Look it over calmly, take all the time you need, and if you decide to move forward, write me.
I hung up. I stood still. The sun was still there. Cars passed by. A pigeon pecked at something on the ground two meters from my feet. Everything else seemed to have stopped.
The phone vibrated three minutes later. A compressed file from a number I didn’t recognize.
I went into the park bench half a block away, sat in a corner, and put on my headphones. There were four videos. In the first, a woman of similar build to mine was running naked on an inclined treadmill with her wrists secured to a horizontal bar above her head. Her tits bounced with every stride, heavy, slick with sweat; between her thighs you could see her shaved cunt, shining with effort. She was running because she had no choice: if she slowed down, the strap holding her upright tightened backward and lifted her ass in an obscene arch. A man dressed in black watched from the side with a tablet in his hand, jotting something down, his eyes fixed on the crease sweat drew between her ass cheeks. In the second video, another woman was doing naked squats with a heavy bar across her shoulders, her legs spread wide, her cunt visible with each descent. Every time her knees gave out before reaching the bottom of the movement, she got a brief electric shock on her thighs that made her moan and clench her inner lips. It wasn’t violent, but it was enough for her body to learn to prefer correction, and for her nipples to stand hard as stones. In the third, a woman on her knees, also naked, repeated phrases out loud in front of a large mirror: affirmations about her body, her capacity, what she deserved. Her hands were tied behind her back and a silicone dildo was buried in her cunt, moving on its own every time she mispronounced a word. Her voice trembled at first. By the end of the video, it didn’t tremble, even though a stream of fluid gleamed on her thigh and had run down to her knee.

Then came the “after” images.
The same women, months later, standing naked in front of those same mirrors. The weight loss was obvious—defined waists, firm asses, high tits with the nipples standing proud—but that wasn’t the most striking thing. The most striking thing was their posture. The way they looked at themselves without looking away, their legs slightly apart, not covering anything, not hiding their cunt or their asshole. As if something that had once been broken inside had found its place.
I saved the phone. I left the park. I walked home with my panties wet, feeling the fabric stick to my cunt with every step.
***
That night, while Nicolás finished his homework in the playroom, I sat across from Rodrigo in the kitchen and told him I’d found a weight-loss program.
—It’s intensive —I began. —Twelve months. I’d live in a closed facility, no visitors. Just one video call a week. And once I go in, the program doesn’t allow early withdrawal.
Rodrigo set his glass down on the table slowly. Not abruptly. Slowly, the way he did when he was processing something.
—It doesn’t allow early withdrawal?
—It’s part of the method. That’s how they guarantee the process is completed.
—What kind of method, Marta?
I didn’t know how to explain the videos to him without ending the conversation before it even started. I said what I could say.
—Very strict discipline. Physical and mental control, with constant medical supervision. It’s extreme, I’m not going to lie. But I saw the results. I saw women who entered like me and came out different. Not just physically.
He fell silent. Then he went to the window, as he always did when he needed to think without being watched.
—A year without seeing you. Without Nicolás seeing you. —His voice was low. —What if something goes wrong? What if you want to leave and they won’t let you?
—They told me there’s medical supervision all the time.
—That’s not the same as being able to leave when you want.
—I know.
—Do they have a license? Were you able to verify anything about that place?
—Not yet. But they sent me information. I can look into it more before deciding.
Rodrigo turned around. He looked at me for a long moment.
—What convinced you, Marta? Because I know you, and you’re already convinced. That’s not the face of “I’m thinking about it.” That’s the face of “I already decided.”
He was right. There was no point lying to him.
—The women who went through the program. The way they looked at the end. Not just the weight: the way they looked at themselves. As if they’d found something. I’ve spent fifteen years looking for that in the mirror and I can’t find it. I want to try it.
Rodrigo let out his breath slowly. He rested his forehead against the windowpane for a second, as if the cold helped him think.
—I don’t like it. —He said it with complete honesty. —A year is too long. Nicolás needs you. I need you. And this not being able to leave thing gives me a bad feeling. But if you feel like it’s what you need to be at peace with yourself... I’ll accept it. Just promise me that if something is really wrong, if you feel something is wrong, you’ll find a way to tell me.

—I promise.
We hugged in the middle of the kitchen, and the hug lasted longer than it should have. I felt his cock hardening against my belly through his pants, and I knew immediately what he was thinking too: a year without touching me, a year without fucking. I found his mouth and kissed him with tongue, biting his lip. He grabbed my ass with both hands, squeezing hard, and dragged me toward the living room. I tugged on his belt as we walked, pulling his pants halfway down before shoving him onto the sofa.
—Nicolás —he murmured, not very convincingly, already with his cock out, thick, hard, throbbing against his abdomen.
—He’s doing homework. We’ve got twenty minutes.
I knelt between his legs and took his cock with both hands. It was hot, wet at the tip from being half-hard for so long. I ran my tongue from the base to the head, slowly, while looking him in the eyes. Then I took the whole thing in my mouth in one shot, until the tip hit the back of my throat and made me tear up. He groaned softly and grabbed my hair.
—Marta, fuck... like that I’m not going to last.
I pulled his cock out of my mouth with a wet sound, strings of saliva hanging from my chin.
—I don’t want you to last. I want you to cum twice before dinner.
I went back to sucking him, faster now, helping with my hand at the base, massaging his balls with the other. He had his head thrown back, jaw clenched, abdominal muscles tight. I felt his balls tense in my hand, felt his cock swell a millimeter more before the burst.
—I’m cumming... I’m cumming, Marta...
I didn’t take it out. I buried his cock to the back of my throat and felt the hot jet come down straight, thick, abundant. I swallowed every drop while he clenched my hair and trembled beneath me. When I let him go, a white thread was leaking from one side of his dick. I cleaned it off with my tongue.
—Come here —he said, his voice rough, grabbing me under the arms to lift me onto the sofa. He turned me around, yanked my pants and panties down to my ankles, and put me on all fours with my face pressed into the cushion.
I felt his tongue run along my crack from top to bottom, from my asshole to my clit, slow, thick, hot. He spread my pussy lips with his thumbs and sucked my clit until my knees started to give out. Then he slid two fingers in, deep, curling them upward, while he kept licking me. I bit the cushion so I wouldn’t scream and wake Nicolás’s curiosity.
—Fuck me already —I begged, my face buried in the fabric—. I can’t take it anymore, fuck me.
I heard him straighten up behind me, felt the head of his cock, still hard even though he’d just come, pressing against the entrance to my soaked cunt. He drove it into me in one thrust, to the hilt, and I let out a muffled moan against the sofa. He started fucking hard, gripping my hips, making my ass slam against his pelvis with every stroke. My tits bounced inside my bra, nipples erect and rubbing against the fabric with each push.
—You’re dripping —he panted behind me—. You’re cumming on my cock, whore.
—Yes... yes... harder... deeper...
He pulled one hand off my hip and ran it over my asshole, wetting it with my own fluids. Then he pushed his thumb in there, slow but firm, up to the knuckle. That was the drop. I felt the orgasm rise from the soles of my feet and explode in the center of my body, clenching my cunt around his cock, clenching my asshole around his thumb. I bit the cushion so the cry wouldn’t escape me.
He didn’t slow down. He kept thrusting for as long as my climax lasted, stretching it out, until I felt him swell inside me again. He pulled his cock out of my pussy, ran it over my asshole several times, lubricating it with my juices, and then pushed carefully, millimeter by millimeter, until the head slipped into my ass.
—Fuck... fuck, Rodrigo...
—Hold on, my love. A year without this. Hold on.
He slid it all the way in, slowly, until I felt his balls slapping against my cunt. Then he started moving, pulling out until only the tip remained and plunging back in to the hilt, again and again. I lowered one hand and touched my clit to the rhythm of his thrusts, drawing quick circles with two fingers. The sensation of having him in my ass while he pinched my clit was too much. I came again, harder than the first time, and felt him unload into my asshole with a low grunt, filling me with hot semen.
We stayed like that for a moment, him collapsed on top of me, his cock still inside my ass, both of us panting. When he pulled out, I felt the warm stream running down the inside of my thigh.
Nicolás’s voice came from the playroom asking if snack time was ready yet.

—Two minutes —I shouted, with the voice that came out of me—. I’m coming.
Rodrigo smiled at me, his face flushed, as I pulled my panties back up over my still sticky ass.
***
I called Claudia the next day, at nine in the morning. I told her I accepted. She gave me precise instructions: a small suitcase, sports clothes, unscented hygiene products, two personal photos in a rigid frame, nothing else. Transportation would come get me the following Friday.
That week I did everything slowly. I took Nicolás to school as always. I cooked Rodrigo’s favorite meals. I fucked Rodrigo every night, sometimes twice, in every position we could think of, as if trying to brand an entire year of sex into a single week. I sucked his cock in the kitchen while he washed the dishes, one very early morning. I fucked him in the bathroom while I showered, with the water falling between us. I asked him to fuck me in the ass two more times, because I knew that at Centro Horizonte that was going to be something else, if it happened, and I wanted the last ass that had been fucked to be his.
On Thursday night we watched a movie, leaning on his shoulder, without talking. My hand was inside his pajama pants, holding his semi-erect cock, not moving it, just feeling it. Everything had that strange texture of last times, when you know something is about to change and it hasn’t changed yet.
On Friday, Nicolás hugged me at the door and didn’t let go for a good while.
—Where are you going, ma?
—To a special camp —I told him, hating myself for not being able to tell him the truth. —To learn to take better care of myself. I’m going to call you every week. And when I come back, we’ll go to the dinosaur park you showed me on the computer.
—The real one? The big one?
—The real one.
His hug tightened hard for a second. Then he let go.
Rodrigo kissed me on the forehead, still, wordless. Sometimes Rodrigo’s silences say more than anything he could say out loud.
I got into the van that arrived exactly at the time Claudia had said. I watched through the window as the two of them got smaller and smaller, standing on the sidewalk, until we turned the corner.
***
The trip took almost four hours. Highway, provincial road, a dirt track between tall trees. Finally, a metal gate with a small sign: “Centro Horizonte.” The driver didn’t speak the entire trip. Neither did I.
The first thing I noticed was the silence. Not the silence of an empty building, but the silence of a place that was far away from everything. No traffic noise, no voices, no constant background of city life that you get so used to you stop noticing it. Just wind in the fields and, in the distance, something that sounded like machinery.
Claudia was waiting at the entrance. Tall, slim, her hair pulled back with a precision that seemed part of the uniform. Her smile was correct and efficient. She held out her hand.
—Welcome, Marta. Let’s start by getting to know the facilities. But first, I need to ask you to undress out here. It’s admission protocol. Every participant enters the Center without clothes on. The clothes you brought will be stored away.
I looked at her for a second. Then I set the suitcase on the ground and started unbuttoning my blouse. My fingers were trembling. I took off my shoes, my pants, my bra, and my panties, folding each garment as if that would give me some kind of control over what was happening. She waited patiently, hands folded in front of her, looking at my body like someone evaluating a piece of furniture arriving for a move. I felt my nipples harden in the cool air, felt the sun hitting the folds of my belly, my cunt, my ass. Fifteen years of hiding, and now I was standing naked outdoors in front of a stranger.
—Good posture. We’ll work well with you. Follow me.
The gym was the first thing, and the largest. Treadmills with wrist anchoring systems, identical to the ones in the videos. Metal structures with pulleys, ropes, and straps hanging from the ceiling like a slaughterhouse room. An entire wall of mirrors under white lights that left no shadow from any angle. A side room with mats, hooks in the ceiling, and locked cabinets, where I caught sight of dildos in various sizes, anal plugs lined up by diameter, rods, whips, ball gags in red and black, leather harnesses. Each element had a visible purpose. None were decorative.
On one of the treadmills, a young woman was running with her wrists tied to the top bar, exactly like in the video they had sent me. Her shaved cunt was exposed and a dildo was strapped to her body by a harness that moved inside her with every stride. Her tits gleamed with sweat. She didn’t look at me when I passed by. Her eyes stayed fixed on a point in the mirror in front of her.
The dining room was stainless steel: long tables, trays divided into sections, signs with grams and calories for each option. No free choice. Every meal, calculated. The tables had a hole in the center of each seat, and underneath, fixed vibrators pointed upward.
—During meals, orgasm control is also worked on —Claudia explained, neutral. —The participants sit impaled on the vibrators, which are activated at random intervals. Every bite has to be eaten with composure, without finishing at the table. Those who cum before finishing their plate lose dessert. You’ll learn.
I swallowed.
In a hallway connecting the two buildings, we passed a door with an electronic lock. Claudia pointed to it without stopping.
—The correction room. You’ll get to know it when appropriate.
I didn’t ask anything else.
My room was at the end of a long hallway. It was small and white: a metal bed with a firm mattress, with metal rings welded to the four corners and leather straps folded underneath the mattress; a high window with bars painted the same color as the wall, a wooden desk with no drawers, an outer-lock wardrobe. On the nightstand there was a medium anal plug, lubricant, and a note that said “Mandatory night use during the first two weeks. Gradual adaptation.”
Claudia checked the frame with my two photos before giving it back to me. Then she put the suitcase in the wardrobe, locked it, and slipped the key into her apron pocket.
—Rest this afternoon. Tomorrow the program starts at six. Remember the plug before you go to sleep. If you don’t put it in yourself, I’ll put it in for you at the first check.
She closed the door. The electronic lock clicked shut, dry and final.
I sat on the edge of the bed, naked, feeling the cold metal under my thighs. The white walls. The silence of the countryside outside the barred window. The images from the videos came back on their own: the straps, the shocks, the dildos moving inside the women while they ran and squatted and prayed phrases in front of the mirror. And then the other images, the ones at the end, those naked women with a different posture, that way of looking at themselves without averting their gaze, without hiding anything.
I thought of Nicolás and the dinosaur park. I thought of Rodrigo kissing me on the forehead without saying anything. I thought of my ass still a little open from how he’d fucked me the night before, and of how I would learn to open it all the way during the year that began tomorrow.
I picked up the plug from the nightstand. It was bigger than it had seemed in the note. I lubed it carefully, lay on my side on the bed, and slowly pushed it in, breathing, until the base settled against my asshole. My whole body tensed, then relaxed. I stayed there, still, with that cold presence inside me, breathing.
I’m here now, I told myself. There’s no going back. The only thing I can do is see what happens when that door opens tomorrow at six.
I lay on my side, with the plug settling centimeter by centimeter into my body. Outside, the wind moved something that sounded like metal against metal, very far away. I closed my eyes and waited for sleep to come before fear did.