It's a given--as a new mom, you won't have much time to exercise. But you don't need a lot. Here's a plan that takes advantage of quick spurts of exercise.
3. AB CRUNCH Lie faceup, knees bent and feet flat on the floor. Place fingertips behind head, unclasped, elbows open. Contract abs to bring spine into contact with the floor; then lift head, neck and shoulder blades off floor, bringing ribs toward hips. Lower and repeat. Do 10–12 reps, working up to 15. Strengthens abdominals.
4. BENT-KNEE PUSH-UP Kneel on the floor, knees under hips. With arms straight, walk hands forward until wrists are under shoulders and torso forms a straight line from head to hips. Tighten abs. Bend elbows; lower chest toward floor until elbows are 90 degrees to shoulders. Push up to starting position and repeat. Do 10–12 reps, working up to 15. Strengthens chest, front shoulders and triceps.