There’s always a new workout split trending online, promising better gains, fat loss, or smarter recovery, from the 3-2-1 method to the 6-12-25 method. Now, the 4-2-1 method is having its viral moment on TikTok.
This weekly split is designed to help you build muscle, burn fat, and improve mobility. It’s simple: four strength days, two cardio sessions, and one day focused on mobility. And while it’s all over social media, many trainers have backed this approach for years.
