Want to tone your tummy? Try this exercise from E! host Maria Menounos’ circuit routine.

Here's how to do it: Lie faceup with your hands behind your head, elbows pointing forward and your knees bent in a crunch position. Slowly lower your legs to tap your toes on the ground while keeping your lower back pressed firmly into floor, then return to start. Do 25 reps.

Try this move: Leg Drop

Have more time for a full workout? You can do this exercise as part of a fat-melting circuit. Watch Maria Menounos, author of Every Girl’s Guide to Diet and Fitness ($14, amazon.com), show you how to do a speedy, 7-move exercise routine. Do the circuit two to three times to get a great workout in less than 20 minutes.