Want a hot booty? Do 10 isometric squats on each leg and feel. the. burn.
Source: http://www.facebook.com/fitnessmag/videos/10153497306067442/
Want a hot booty? Do 10 isometric squats on each leg and feel. the. burn.
Source: http://www.facebook.com/fitnessmag/videos/10153497306067442/