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It's been estimated even if they lose 5% of their hair coat, they will not be able to thermoregulate in cold ocean water.
It's been estimated even if they lose 5% of their hair coat, they won't not be able to thermoregulate, uh, in, in cold ocean water.
Since your brain is so active during REM sleep, it loses the ability to thermoregulate or maintain your body's core temperature.
Thus, it is the perfect candidate to thermoregulate while asleep.