Yes, amazing legs take effort, but we can help you streamline the sweat sessions. "This routine is designed to target your lower-extremity muscles," says trainer Joe Dowdell, founder of Peak Performance in New York City. "It's the fastest way to tone and strengthen your legs."
He recommends doing the entire four-move circuit, resting for about a minute, then repeating it two more times. (Work these fat-blasting moves into your exercise routine at least three times a week.)
Lie on your back with your knees bent, heels on the floor, and toes lifted and pulled up toward your shins. Raise your buttocks off the floor until your back forms a straight line from knees to shoulders, and hold for 1 second before lowering. Repeat 15 times.
Stand with left foot forward and right foot back, in a wide stance. Hold a 5-pound dumbbell in each hand at your sides. Bend knees, keeping left knee over your ankle and lowering right knee almost to the floor; then return to standing. Do 8–10 repetitions on each side.