Just because you have a bun in the oven doesn't mean you have to give up on exercise and let your buns go to mush. Aside from yoga, strength training will help an expectant momma stay strong and healthy during her pregnancy, aid in her labor, and be helpful once the little one arrives. Here's a routine I've been following throughout my pregnancy that will work your entire body. I recommend using a lightweight pair of dumbbells (two to five pounds) to avoid straining your changing body. As always, before beginning any new exercise routines, consult your doctor.