Add Yahoo as a preferred source to see more of our stories on Google. Training your abs but neglecting your lower back is like going out in the sun without loading up on sunscreen: you might be able ...

“Back day” has become a staple of fitness social media, often framed through aesthetics alone.

According to experts, it takes just four core workouts to absolutely rip your top half to shreds, so you can get stronger.

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. It’s easy to almost ...

A reverse hyperextension machine, also known as an RH machine or a reverse hyper, is an exercise machine that provides spinal decompression and strengthening of the posterior chain muscles — erector ...