Instructor Leah Sarago offers moms-to-be six 15-minute workouts in Fit + Sleek Prenatal Physique. Choose from cardio (think lunge variations with leg and arm lifts), bump-friendly core sessions and upper-body mat exercises. String a few together for a longer workout, or « pick just one if you want to ease up as your pregnancy progresses, » our due-any-day tester suggested.
Calories burned: 40 (stretching) to 79 (cardio sculpt)
Equipment needed: Three sets of dumbbells (light, medium, heavy) from 2 to 8 pounds, yoga mat, chair
*All estimated calories burned are based on a 140-pound woman.