A San Francisco gym went viral for a sign about vibe coding. The gym says it's an AI-generated fake.

Fitness SF said that this gym etiquette sign is an "AI-generated fake." @iansbrash A sign instructing San Francisco gym-goers not to vibe code between sets went viral. The sign was an "AI-generated fake," according to the gym. Amid tech's vibe-coding obsession and fitness boom, it's no surprise the image has gotten heat. Don't hog the leg press while prompting Claude. A screen with the logo of Fitness SF, a Bay Area chain of gyms, went viral among techies on X and Instagram on Monday. The image instructed gym-goers to refrain from writing code or prompting AI during their workouts. "Be present. Lift harder. Ship later," the image reads. Troy Macfarland, Fitness SF's director of marketing, said, however, that the image was an "AI-generated fake." The gym does have etiquette signs that mention phone usage and being courteous, he wrote, but none mention vibe coding.