It is best to practice only one part every day, and each part should be exercised by more than five different training methods to fully stimulate muscles and supplement nutrition after exercise. After muscle training in one part, you need to rest for at least 72 hours, arrange exercise and rest, and your abdomen can exercise every day. So you can set a goal according to your physique, you can exercise for one day, you can also exercise your muscles for one day, and then do aerobic training for another day.