Fitness during pregnancy Exercises and breathing techniques for pregnancy and preparation for birth. Fitness during pregnancy is important. It relieves and alleviates discomforts during the physical change. Proper exercises prepare you for the birth and improve your daily well being. The increased oxygen in your body has a positive effect on your baby's development. This fitness program helps to ease your mood swings and will strengthen your back and pelvic floor. Your former figure will return faster after giving birth. You can choose between a short, medium or long exercise program or set your own schedule from the menu.