Do You Look Fat?
By Lara McGlashan
Body Buster: Ballet flats
What They May Give You: Saggy butt
Why: Shoes with no arch support can cause the feet to flatten out, the knees to roll inward, and the pelvis to tilt forward, resulting in shortened hip-flexor muscles and a saggy butt.
Quick Fix: Stability-ball Bridges. Lie with your shoulders and upper back balanced on a ball, knees bent. Clench your butt, press your hips up to the ceiling, and hold for five counts; lower. Do three sets of 15 reps three times a week.