Training & Nutrition - Feeling warmer after hard rides: metabolism?
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07-09-08, 11:53 AM
It was yet another stinking hot night last night in southern Ontario, and we don't have air conditioning by choice at our house. Usually I rather enjoy the heat, but last night I was clammy and felt warmer than usual. My muscles were aching pleasantly, and it didn't bother me, but it got me to thinking: would a slightly higher than normal body temperature after a hard ride be a good indication both that the muscles are repairing themselves and that fat is being burned?
I'm still about 30 pounds over my ideal weight, so I need to burn more fat off of my body. It would be nifty to know that my metabolism is working overtime for a period of several hours following particularly hard rides. But I don't know the physiology behind these sorts of things. Is there a link between body temperature and fat-burning?
I think it just means that your blood got pumping and is filling all the capilleries etc.
When I ride in cold weather, I warm up my hands by circling my arms in a windmill fashion. That gets the blood flowing into my hands, and they warm up. I think the same sort of thing happens in various parts of the body when we cycle.
Same here. I ran for about 20 minutes on an empty stomach around 1pm, and it was HOT out, though I still drank a lot of water. After shower, and even 2 hours after, I was still hot..on the verge of sweating just by sitting with a desk fan on me too. But I downed 3 glasses of cold water at a restaurant, and that helped a lot.
Your metabolism might be warming you up, but isn't a likelier explanation the warmer weather?
Seriously, your leg muscles will be warmer during exercise because of more blood and plain old friction of the muscle cells and fibers sliding around. Your skin temperature will also be warmer because that's how you cool off. But even if your metabolism is slightly higher, your body core would compensate by cooling itself off more. Us warm blooded critters keep amazingly stable core temperatures unless we're sick or suffering from hypo- or hyperthermia.
I think it's interesting that the main way the body acclimatizes to hot weather is by producing a larger volume of blood. This blood circulates in capillaries close to the surface and cools through radiation into the air.
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