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So if that's the case, coffee, which has a diuretic effect anyway,  
magnifies it.  A reason to avoid it, personally, and unlike some  
people I don't get those early morning nerves (though with my horse  
earlier this season, I should have.)  Yet I know people who are  
unperturbed by ride morning coffee, maybe mostly men who find it  
convenient to pee compared to a bundled up woman with a horse  
circling her, roaring, "it's only been 3 miles, what's the matter  
with you, woman??"

The term "your mileage may vary" couldn't apply more to riders and  
palatable food (and drink)

Yyou know how we talk about drop-offs and how scary they can be--I  
had vertigo symptoms for a couple of years recently which didn't seem  
to really manifest too much on the horse, but I noticed it bigtime in  
skyscrapers and on bridges.  Worried if it was permanent.  Went  
roller-coastering for 12 hrs at Magic Mtn in late spring with friends  
Blayne and Elfta and it was gone.  Found out later that vertigo could  
be an effect of the "big M".  The definitive test was going up last  
Sunday in an aerobatic plane (belonging to and expertly flown by  
occasional endurance rider Nicco Murphy), a tandem, where I sat in  
the front seat (and operated some of the controls) and we did all the  
stuff you could imagine, over Lake Mathews.  I even did two loops  
myself.  No vertigo (and no nausea), but the g force was like a  
workout, I was pooped afterwards.  I kept checking in with that part  
of my brain..."is this scary?  No", and we did things like spins  
where you point the nose down and spiral in towards the lake, the  
motor cuts out (stalls), talk about trusting Nicco with my life!   
Fun.  Guess I'll be ok on the California Loop someday at  
night...though with no parachute.  ;-)

Lynne




On Oct 3, 2006, at 9:08 AM, Beverley H. Kane, MD wrote:

> On 10/2/06 11:06 PM, "Lynne Glazer" <lynne@xxxxxxxxxx> wrote:
>
> > The only thing I can't do is COFFEE.  The
> > diuretic effect is somehow magnified in the cold weather of a dawn
> > start, yikes.
>
> Ah, you're describing physiological process of "cold diuresis."  
> It's the
> opposite of sweating, where water is evaporated out the skin. In  
> the cold,
> blood is shunted away from the periphery (hands, feet, skin,  
> superficial
> tissues) and into the central regions of the body, including the  
> kidneys.
> When the kidneys get more blood, they produce more urine.
>
> Important to have extra hydration in cold and at altitude.
>
> Beverley


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