What part of the body is the height of the back kick in the long jump as close as possible?
Close to the hips. When kicking, the chest and head should be fixed in the designated position, which can exercise the softness and strength of the legs.
Third, when you "kick" up, you are very fast, but when you fall, you should control it and don't fall to the ground. So kicking up and falling down after kicking are not even in rhythm.