Lie on your back with your knees bent and feet flat, toes pointing straight ahead. Place your baby belly-down on your thighs and hold onto her hips or ankles. Keeping your abs tight, slowly lift your hips off the floor while squeezing your glutes [shown]. Lower your hips to the floor. Repeat 5 times, working up to 10.
Strengthens: hips, glutes, lower back and core.