You can squat and lunge the day away, but that won't do anything for the pesky muscles on the outer parts of your upper thighs and butt. These muscles need a specific kind of movement to make them work hard, and the side leg lift is the best one! 1. Lay on your side with your legs stacked on top of each other. 2. Support your head with your hand, but do not push down with your neck. All the power should be coming from your legs. 3. Lift top leg SLOWLY to 45 degrees, and hold for three counts 4. Lower leg SLOWLY (if you just drop your leg you get no benefit) and return to starting position. 5. Switch sides and repeat.