One of the really neat things about being a bipedal mammal is that our largest joints, the hips, have a spectacular range of motion. Within the hip are a variety of muscles, tendons and bones that all ...

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. While many types of ...

Isometrics are exercises like planks and wall sits that strengthen muscles and tone the body. Because they are low-impact, isometric exercises help injury recovery and relieve joint pain. Isometrics ...

Why reverse planks might be the most underrated core move ...