E! Daily 10 host Catt Sadler shows off her routine, created by Madonna and Gwyneth Paltrow's trainer, Tracy Anderson
Step 2: Leg Split Crunch
Lie on back, legs straight out in front with ankles crossed. Raise top leg 90 degrees, crunch up and hold while lifting second leg to meet the first. Lower each leg separately. Alternate legs, doing 50 reps on each side.
Credit: Albert Michael/Startraksphoto.com