Why do we over-eat at Christmas?Why do death rates peak in winter?Why are winter breaks in the sun a proven money-spinner?In short,why is winter so miserable for many of us?The answer may not be under our noses but in the back of our necks.The pineal gland has always been something of a mystery;the first anatomists speculated that early man really did have eyes in the back of his head and the gland was a vestige.
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