I try to refrain from groaning aloud in group fitness classes. Grunting, cheering, gasping for breath—all of those I do regularly. But I've never been the type to outwardly "boo" when an instructor ...

Despite the funny name, and perhaps not being as well-known as pushups or squats, burpees are a challenging exercise that work many of the major muscle groups in your body. A burpee is essentially a ...