Do it right
And now a little something for my nonpregnant readers: You can do any number of exercises on the captain's chair at the gym, including leg raises and bicycles. To work your midsection, stand gripping the chair's handholds, press your back against the pad, contract your abs and raise your bent knees to your chest. Then pause at the top and lower your legs. Do two or three sets of 15 to 20 repetitions.