June 23, 2026

Pre-Workout Gone Wrong

She was just trying to get a quick selfie after her workout when the new pre-workout supplement she’d taken started to hit her much harder than expected.

At first it was just warmth spreading through her chest. Then the heat turned into a deep, tight pressure. Her breasts began to swell, growing heavier and rounder with every breath. The black sports bra that had fit her fine minutes earlier was suddenly struggling, the fabric stretching tight across her expanding chest.

She felt the weight increasing fast, pulling the bra down as her tits grew fuller and more sensitive. The straps dug into her shoulders while the band tightened around her ribcage. Sweat broke out across her skin as the growth continued, the once comfortable sports bra now stretched thin and shiny over her rapidly ballooning breasts.

Her breathing grew shaky, soft gasps escaping her lips as she watched them swell bigger right in front of her. The fabric creaked with every inch they gained, the material straining hard to contain the sheer size and weight. Her nipples pressed stiffly against the stretched fabric, every brush of the bra sending sparks through her.

By the time the growth finally slowed, her breasts were massively oversized — heavy, flushed, and barely contained. The sports bra looked ready to snap, stretched so tight it dug deep into her soft flesh. She stood there in the middle of the gym, phone still in her hand, chest heaving as she stared down at what she’d become. Too big. Too obvious. And far too sensitive to ignore.

Pre Workout Gone Wrong (YouTube)