Improved endurance. “Barre workouts are all about endurance, form, and repetition,” says Liotta. “You hold positions for a long time and exhaust reps, but with minimal weight.” ...

Seven-minute interval cardio workouts (like this one) have been shown to be effective: In a 2013 study, participants experienced strength and endurance gains with a series of back-to-back ...

I’ve always been pretty sceptical 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.