Add Yahoo as a preferred source to see more of our stories on Google. About 80 percent of adults experience lower back pain at some point in their lifetimes, according to the National Institue of ...

With so much focus on the upper body and core, it's easy to forget to tone your back muscles. After all, you want to look ...

Maximize your gym time with this efficient and powerful 3-move dumbbell workout designed to target every major muscle group ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

Start on all fours. Extend your right arm in front of you and your left leg behind, actively reaching in opposite directions.