If you’re between 13 and 27 weeks of pregnancy, this 20-mintue Pilates class is for you. During this time, it’s okay to do exercises lying on your back as long as you don’t experience nausea, dizziness or shortness of breath. You can expect easy exercises such as hip twists, adductor pulses, and bird-dogs to strengthen your pelvic floor and open up your hips. The movements will also help you maintain your mobility and posture, while preventing lower-back and pelvic pain.