i think the blood vessels have little hairlike structures in them to keep the blood from all going to our ankles and staying there. going upside down will put a lot of blood up high in the body and the hairy thingies will keep it up there. making higher blood pressure.

maybe.

i am no doctor or scientist, but this seems to be a thought i have read or heard somewhere.

i have no idea whether it is anything to worry about or not.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.