Start on all fours. Extend your right arm in front of you and your left leg behind, actively reaching in opposite directions. Keep your hips and shoulders square to the floor, and avoid letting your ...

“An isometric exercise is a static exercise where you hold a muscular contraction without movement, as opposed to a dynamic exercise where the muscles are able to contract from their longest to their ...

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 ...

Changing into workout clothes and breaking a sweat isn’t always an option when you’re strapped for time or at work. Isometric exercises, a.k.a. “static contraction training,” could provide an ...

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 ...