If you're walking, standing up from the couch or bending down to pick something up, you are using your hamstrings. The muscles, which run down the back of the leg from the hip to the knee, are ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Nordic curls are a bit of a gymgoer’s party trick. As you lower the backside of your body backwards ...

Add Yahoo as a preferred source to see more of our stories on Google. The term "core" often refers to a variety of muscles around the center of your body: 'TVA' (transverse abdominis), rectus ...