Jesse Walker is books editor of Reason, where he has written on topics ranging from pirate radio to conspiracy theories and from cults to copyright law. The Los Angeles Times has described him ...

Sarcopenia is muscle loss that becomes more common as you get older, with this condition involving more of a decreases in muscle mass and strength than you might otherwise experience. You can help ...

Muscle strength grading is used to categorize muscle strength on a scale of 0 to 5 in relation to the expected strength for a muscle. One of the more common methods is a hands-on test called the ...