You might not want to take your two-year-old ice skating, increase your miles, throw on a little extra weight on at the gym, repeatedly toss your 35-pound child into the air, climb up and down from your washer and dryer to extract a live chipmunk from your dryer vent, replace said dryer vent, climb a ladder to fix some lightbulbs, and go to aerobics at the gym . . . in the same week . . . if you are pregnant.
You might hurt your back . . .