The jury is in: “Bad knees” aren’t sidelining your workout; your hips may be the guilty party. According to a review of 28 years’ worth of research on common exercise injuries, hip strength is the biggest predictor of knee pain. So grab a resistance band and do these moves daily, working up to 3 sets of 10 reps on each side.
Front Kick: Turn so band is anchored behind you and around left ankle, foot flexed. Swing left leg forward about 12 inches, keeping it straight, and return to start.
Seated Rotator: Sit so band is anchored to right and around left ankle. Cross ankles. Keeping knees together, rotate left leg outward about 12 inches. Return to start.