When my husband has a particularly tough workout (or workday), he comes home and says, "I have to roll."
He's talking about using a foam roller on body parts including the hips, quads and calves, using his own body weight to supply the force. You've probably seen people rolling in your gym; some facilities even offer classes. The rollers are available in various sizes and can cost as little as $10 — more for fancier ones with grooves intended for more targeted pressure.
But do rollers actually work?