Isometric exercises might sound like something straight out of a fitness science lab, but they're actually one of the simplest and most effective ways to build muscle and strength. Imagine holding ...

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.

Isometric, isotonic, and isokinetic exercises refer to the different techniques for activating and strengthening muscles. Isometric exercises, like planks, involve activating muscles with no movement.