When schools close this summer, teens will have free access to their local Planet Fitness gym.
How many steps it takes to walk a mile depends on your height and speed—but there is an average number.
Though it may be annoying, sudden muscle fatigue during exercise is nothing to worry about. It's a byproduct of the way your body uses energy.
To be an endurance runner is to leave a trail of sacrifice behind you. Here's why marathoners sometimes get off to a runny start.
'Mousercise' encouraged kids to get off the couch and get moving, even though Mickey Mouse sometimes had trouble keeping up.