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When I'm out on the bike I've found that I can keep going for approx 50% longer if the temperature is below freezing.
It seems that the energy I use to prevent myself from overheating seriously eats into my energy reserves. A typical weekend ride may last 4 hours at which point I'm ready for home, whereas ysterday I kept going in sub zero temperatures for more than 6 hours.
I always keep myself hydrated and never knowingly wrap up too warm so the only conclusion I can make is a third of my energy reserves normally get wasted with just maintaining normal body temperature.
Do any experts in this field have any opinions?
Cheers
I don't think you use energy in stopping overheating - more likely you use extra energy in cold weather I would have thought.
More likely you overheat / dehydrate when it is not so cold I would have thought