The shoulder muscles are responsible for maintaining the widest range of motion of any joint in your body. This flexibility is also what makes the shoulder prone to instability and injury. Muscles, ...

Shoulder shrugs may help relieve muscle tension in your neck, shoulders, and upper back. They’re great for most fitness levels and could be modified for different levels of strength. If you have a ...

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 ...