I as wondering the same thing.  I have an inversion table that I use to stretch my spine, & all the blood runs to my head. Been thinking this is a good thing.  Any way of finding out?

Inversion therapy can be helpful for many people because the increased blood flow allows for greater delivery of oxygen and nutrients throughout the body. It also can encourage greater lymphatic fluid flow as well, assisting the body in detoxifying, and stimulating immune response. Be sure to drink plenty of water to help with this process. The physical manipulation of the body’s mass is an underutilized therapeutic realm by many of us. Thanks for the reminder! – Coach Zoe