Benefits of rebounding include:
Something To Think About – The G-force (gravity) at the top of the bounce is eliminated and the body becomes weightless for a fraction of a second. At the bottom of the bounce, the G-force suddenly doubles over what is ordinary gravity on earth, and internal organs are put under pressure. Their cellular stimulation is increased accordingly so that waste materials within cells get squeezed out. the lymphatics carry the waste away to be disposed of through the urinary tract and other excretory mechanism.
I have found the power of vital breathing and lymphasizing to be a master principle of a vital life.
The above information on Lymphasizing was from an article post by Eric Morgan. I have confirmed this information with other sources and his article is consistent with what I have found.