High Knee Step-Ups for a Firmer Booty
Want a firmer booty in two to three weeks? Try high knee step-ups!
Stand facing a bench and step your left foot up onto it. Press into your left foot to come to standing one-legged on the bench while quickly raising right knee to chest level. Swiftly lower right leg back down. Do 10-20 reps, then switch legs and repeat.