If your core workouts are feeling stale, add some variety to your training sessions by introducing the sprinter bridge, which ...

Emma Maria Mazzenga is an elite sprinter, and at 92, has few competitors. Photo: Claudia Gori/For The Washington Post Emma Maria Mazzenga likes to win. She once dislocated her shoulder during a race ...

I am not a sports fan. I barely know that baseball is the game that's played with a stick. (Or do they call it a "bat?" Never mind.) I was the tallest kid in my high school, but when the basketball ...

Flexing your muscles is more than just a way to show off the results of your strength training workouts. It can also be a way to build strength. Muscle flexing is more accurately known as muscle ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.