I’ve been pregnant two times now, the first time at 23 and the second time at 25,  and I’ve made it a priority to exercise during each pregnancy.  I found that exercising while I was pregnant helped me to feel better, manage my weight gain in a healthy way, and I was back to my pre-pregnancy weight each time after only 3 or 4 months.  I especially enjoyed yoga during my second pregnancy and I felt that the breathing and stretching really helped me prepare for natural childbirth.  Now with two kids, consistent exercise has to be more creative, such as power walking pushing a stroller at the zoo!