Random question, if we sleep in a colder room, for example, will our body respond by ramping up basal metabolism to create more heat as a byproduct? or will it store more fat to keep us warm?
My guess would be acute cold exposures ramp up our metabolism and chronic cold makes us store fat?
p.s. I looked at a similar question on here but it didn't quite answer what I was looking for.
asked byJeff__1 (15236)
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on June 07, 2011
at 04:51 AM
Body temp is controlled by hypothalamus......and leptin status.
So you ever wonder why we wear blankets when we sleep? Melatonin lowers our body temp.
After 4 hrs of melatonin secretion....leptin enters the hypothalamus and effects lateral tracts to immediately send a thyroid signal to upregulate T3 and T4 which coupled with leptin act peripherally in muscles at the UCP3 sites......to burn fat to make ATP or to burn off excess calories as pure heat. This occurs after our prolactin surg from 12 to 3 AM.....immediately after it is over......GH i stimulated during autophagic sleep in stage 3 and 4.....to increase protein synthesis for muscle growth......all while your disapating heat.
The reduced temp....is needed for CNS autophagic repair and the quantum effects on microtubules that facilitate learning and neuronal spouting.
The immune system is also undergoing autophagic repair......that is another reason why the temp has to fall. Temp raises immune function in fever.......
Its all leptin.......and the brain.
That is why brain surgery is cool. Its my experimental lab.
on July 18, 2011
at 10:21 AM
I have two questions one related to sleep the other related to body temp. What effect does alcohol have on sleep. I like beer but more and more I can tolerate it as it interupts my sleep. I don't sleep well and I often wake up about 2 - 3 hours after I go to bed, sweating and my heart racing. That in and of itself should tell me to lay off.
The other thing I've noticed since going paleo (7 months now), I dropped about 30 lbs. I've always been a heavy sweater, especially during exercise. But before I dropped the weight I could not be in the heat more then 5 minutes without becoming totally drenched. However, I've noticed this summer I am able to be in the heat without excessive sweating or at least any where near what it use to be. I still sweat heavily during exercise but that has always been the case even when I was young.
on June 07, 2011
at 12:40 PM
I'm interested in what you meant, Quilt, also.
I, too, have been chronically cold. I'm sure I have Raynaud's syndrome (cold hands & feet) and generally, I am cool/cold, during the day. Honestly, this has a lot to do with why I now live in Africa -- it's warmer. To me, once it gets into the 50's, I'm cold. Except at night. At night I'm always hot. Blanket off, blanket on, blanket off, blanket on. Like that.
I would really like to have some understanding about what is going on and whether there is something I can do to change it. I'd much rather be warm during the day and cool at night!
on June 07, 2011
at 05:09 AM
My body has never been too good at thermoregulation. For many years I had a body temp in the 97s, felt chronically cold in regular temperatures, and had other hypothyroid symptoms. Now I'm much healthier due to paleo, and more muscular, but still trying to gain a few lbs so eating a good deal of food... My body temp is a degree higher than it used to be, and my whole body seems to have decided to burn most of the calories I eat off, as heat. Winter is awesome now, but the warmer months are torturous in a way I've never experienced. After I eat, my skin heats up to get rid of it (rather than doing something really out there like, you know, building muscle and fat) and I sweat like a pig and get so overheated I get ill. I have been fasting on hot days until I know I'll be in AC. I also get badly overheated when I sleep (so bad I wake up in a panic), if I eat too late.
I wonder what this looks like at the hormonal level. Do I have too much leptin? Am I just hypersensitive to what I do have?