The 12-3-30 workout has taken social media by storm with its simple approach: 12% incline, 3 mph, 30 minutes. Discover why fitness experts love this sensation.

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 ...

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. This content can also be viewed on ...