Proper exercise needs long-term persistence to be effective. Both morning exercise and bedtime exercise are good. It is easier to fall asleep if you are very tired after going to bed and exercising. But to master the degree and quantity, it is best to sweat a little, but not too tired. In short, it is appropriate to be energetic the next day. It is best to exercise an hour before going to bed. Dancing is ok, but for the right reasons, as long as you don't do strenuous exercise. Dancing before going to bed helps to relax.