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 ...

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 ...

The buzzy 12-3-30 workout lets you get sweaty in a low-impact, joint-friendly way. But how do you do it, exactly? Here's what to know. The 12-3-30 workout is simple: You walk on the treadmill at a 12 ...

When you walk into a gym in the new year and spot a person walking steadily on the treadmill at a very high incline, they could be following a viral workout trend. The "12-3-30" workout, the ...

A fitness revolution is sweeping through social media, and it requires just three simple numbers to remember: 12-3-30. This straightforward treadmill workout has captivated millions of fitness ...

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 ...

The low-impact 12-3-30 treadmill workout has taken social media by storm and made its way into gyms, homes, and the hearts of gym-goers worldwide. Devotees claim the workout has helped them shed ...

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 ...

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 ...

You may have heard about the 12-3-30 workout. The trendy fitness approach is all over TikTok, where the hashtag #12330 has amassed more than 374 million views. Any fitness trend or tips found on the ...

Discover 2025's hottest fitness trends, from TikTok's viral 12-3-30 workout to weighted vest training and more. Experts weigh ...