As you approach sleep, your body temperature will drop by anywhere from one to three degrees. And in fact, that decrease in cor body temperature is important, if not essential, for getting into deep sleep. Let's do what's called ta gdunkin experiment, which is a thought experiment. Now then i offer you a cold towel, maybe a really, really cold towel. And this towel is saturated with water, so you coud actually squeeze the water out of that and cool your body off. It also points to times within the 24 hour cycle when you might want to avoid using deliberate cold exposure if your primary goal is to get to sleep.

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