When my friend first told me she was doing the 12-3-30 workout, I had no idea what she was talking about. Somehow, despite my Peloton and yoga addiction, I haven’t yet found my way to FitTok, the subsect of TikTok populated with workout hacks and fitness tips. But when two women I followed on Twitter mentioned the workout, I had to find out more about this viral challenge.
“I had been running but stopped last year and wanted a low impact way to build my stamina back up to start again,” says Dore Ann Zimmermann, a New Jersey-based food blogger. “It’s definitely a workout! You can expect to sweat and get your heart rate up.”
