Schedule three leg workouts per week, spreading them throughout the week so your thighs get a day off in between training sessions. Complete three to five sets of each thigh exercise, with each set consisting of eight to 20 reps. Take 60 seconds to rest in between each set. Your thighs should be burning at the end of each set, so hold a pair of dumbbells if you need to make an exercise more challenging. Begin your workout with squats, which work your glutes and quadriceps. Set your feet to hip-width apart and your toes pointed forward. Push your glutes back behind you and bend your knees to drop into a squat. Once your thighs are parallel to the floor, extend your knees and hips to return to a standing position.