• If you want, hold your baby (with both arms) close to your chest, keeping your shoulders down and back. Your baby will add extra resistance.

• Contract your abdominal muscles, then bend your knees at an almost 90-degree angle to squat (or plié) down. Hold for a few seconds.

• Be careful not to lean forward. Instead, keep your back flat and stomach in.

• Straighten back up, and repeat the squat.

• Do 2 to 3 sets of 10 to 15 repetitions.

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Sources: Debbie Rocker, fitness expert and author of Training for Life, and Valerie Waters, certified personal trainer.