Sound advice on running in the cold. I remember running at -8 deg F and
had to wear a scarf over my mouth.
I was stopped by a car and asked if I wanted a ride home?! My beard
was solid ice by then. Then you know it is just too cold and should
pick another day. I no longer bother if it is under 10 deg or so.
The physiology about sweating sounds a bit askew. Sweating or lack
thereof, is almost entirely controlled by the hypothalamus response
to core body temperature changes.
Those in very good condition actually sweat more and are more efficient
at keeping core body temp closer to normal. The electrolyte
content of the sweat does fall with conditioning. Respiratory quotient
falls from 1 to about 0.7 as one depletes glycogen stores and switches
to fatty acid oxidation and a tad less H20 is produced per mole of C02
produced 110/114 ratio then the 1:1 with carbohydrate oxidation,
but that should not affect sweating.
A Physiological Mike
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