View post: I Ran in the R.A.D SYNTH Through Weeks of Tempo Training, Easy Miles, and Intervals. They Quickly Became My Go-To for One Type of Run “As a fitness culture, and in society in general, we’re ...

But guess what? We've got some good news! There's a movement that's the perfect antidote: the so-called "back extensions." Don't picture a reverse push-up (that would be more like a bridge), but ...