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I read somewhere (on the DAN website I think) that the heart pumps 50%
less efficiently when inverted - Anyone know if there is truth to this?

Josh.

> -----Original Message-----
> From:	proverud@on*.no* [SMTP:proverud@on*.no*]
> Sent:	Tuesday, November 11, 1997 2:27 PM
> To:	techdiver@aquanaut.com
> Subject:	Re: Data point 
> 
> OK, gravity exists underwater. The point
> is that blood doesn't weigh anything in water,
> thus no gravitational pull. The pooling of
> blood in lower body is canceled once you're
> immersed. Whether you stand upright, inverted --
> whatever, blood does not tend to sag to the
> lowest point. This is why head-down underwater
> doesn't give a red face as it would on land.
> 
> Think of it this way: put some water in a
> plastic bag. It all stays on the bottom,
> stretching the bag. Then throw this bag into
> your bathtub. All tension is lost since the
> water on the outside carries the weight of the
> water within.
> --
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