Sled Dogs

Interesting story on fatigue.

In fact, sled dogs in long-distance racing typically burn 240 calories a pound per day for one to two weeks nonstop. The average Tour de France cyclist burns 100 calories a pound of weight daily, researchers say.

Do TDF cyclists really burn 15,000 calories a day!

I have to think the reporter screwed up some details as the physiology described some stuff that made no sense. The energy has to come from somewhere. If not from fat and glycogen reserves, then where? I think the point is that the sled dogs continue to have the ability to burn immense amounts of calories even under exercise stress. That tells me the secret is really in an awesome digestive system that can digest on the fly.