Katiesfightforfitness
Stability Squats!!! You may get a few sideway glances but these babies burn that booty! Balance on a BOSU ball (turned upside down) and try at least 3 reps of 20!! #fitnessfriday #bootywurk #squat...
Source : http://katiesfightforfitness.tumblr.com/post/12780
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