There’s a reason everyone you know is doing the 12-3-30 workout. Invented in 2019 by content creator Lauren Giraldo, who went viral for claiming that simply walking uphill on a treadmill helped her ...

Share on Pinterest The 12-3-30 treadmill challenge is trending on TikTok, but can the viral workout really help you lose weight? M_a_y_a/Getty Images TikTok users claim the 12-3-30 treadmill challenge ...

When a heat wave hits, it's time to move indoors, and doing a treadmill workout can be fun and effective. The 12-3-30 treadmill workout continues to be a favorite among workout trends since it went ...

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 ...

If you’ve ever been in a rut with your workout routine (let’s be honest who hasn’t), or if you’ve been inspired to try a new treadmill workoutto mix it up, you may have heard of of the 12-3-30 workout ...

I’ve always been pretty sceptical of viral TikTok fitness trends 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, ...

Forbes contributors publish independent expert analyses and insights. author of Chained to the Desk in a Hybrid World: A Guide to Balance. This voice experience is generated by AI. Learn more. This ...

Theresa Marko, PT, DPT, MS, OCS, is a board-certified orthopedist with over 20 years of experience. Sarah is a writer, researcher and avid yoga practitioner with a decade of experience covering health ...