Core training has always been part of military PT and fitness testing. From crunches to sit-ups, flutter kicks, leg tucks and plank poses, the U.S. military uses many exercises to test core strength.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When it comes to working out, women often have a mix of goals that go far beyond just aesthetics or ...

ONE who has traced the course of educational thought in this country during the last quarter century cannot but have seen that the spirit of the old adage, mens sana in corpore sano, has come to have ...