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 ...

Add Yahoo as a preferred source to see more of our stories on Google. If walking on a treadmill sounds boring, the 12-3-30 workout might be just what you need to shake up your routine. This viral ...

A new workout trend is gaining in popularity, particularly among TikTok users. If you’ve seen the hashtag #12330 pop up on the video platform and wondered what it means, it refers to a new cardio ...

You may have noticed people talking about the viral “12-3-30″ workout on social media recently, or seen the workouts for yourself at the gym (they’ll be the people walking at a very high incline on ...

A fitness trend that took TikTok by storm, racking up more than 14 million views, may have some science behind it. The 12-3-30 treadmill workout, popularized by influencer Lauren Giraldo, promises a ...

You may have noticed people talking about the viral “12-3-30″ workout on social media recently, or seen the workouts for yourself at the gym (they’ll be the people walking at a very high incline on ...

The viral 12-3-30 workout possesses all the hallmarks of a typical TikTok fitness trend: a self-descriptive name, an easy-to-remember hashtag, and the promise of an easier way to burn fat—in this case ...