"This one's an oldie but a goodie!" she told POPSUGAR. "It might look simple but your glute med will be burning up a storm by rep 20!"
- Lie on your side with your right forearm down, elbow directly under your shoulder, left hand on the hip. Make sure you keep your hips perfectly stacked.
- Bend your knees and line your feet up underneath your hips.
- Now, keeping your feet together, lift them up about six inches off your mat.
- Lift and lower your top knee 20 times, then do the other side. Keep your waist lifted! Imagine there's a fire on your mat and you're trying not to burn the side of your waist!
- To intensify, pulse your leg up 20 times at the end.