TANGOFLEX for Mommies (3-DVD Set): Low Impact Prenatal Workout 3 DVDs (1 for Each Trimester), 9 Month Calendar Tracker & Booklet 3 Workouts per Trimester (Strength, Balance & Flexibility) for a total of 9 workouts Low Impact & Relaxing Workouts to help release stress, relieve upper/lower back pain, facilitate better sleep, maintain good posture, ease muscle cramps Workouts tailored to tackle the challenges of each trimester Based on the TANGOFLEX Method