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 ...

Estimates suggest there are more than 650 skeletal muscles in the human body. Muscles perform a variety of functions that are essential to life. Skeletal muscles are attached to bones via tendons and ...

Researchers have found that motor delay and low muscle tone were common signs of an underlying genetic diagnosis in children with neurodevelopment disorders. In a new study, UCLA Health researchers ...

Isokinetic exercise uses specialized workout equipment to maintain a constant speed during movements, regardless of the amount of force applied. Its purposes include rehabilitation, recovery, and ...

How does walking build muscle? While walking builds some muscle, it isn't the big, bulky muscle mass that comes from spending a lot of time in the gym. Rather, walking creates a leaner muscle tone ...