Trainers explain how to complete it successfully.

I’ve always been pretty skeptical of viral TikTok workouts like the 12-3-30 workout. They can be created by anyone with an account, after all, so their merits aren’t usually backed by science. But the ...

It only takes 20 minutes to get a full-body sweat on. Don’t believe me? Try this bodyweight workout, and you’ll be surprised how strong you’ll feel—without even picking up a single piece of equipment!