As babies, both my children fought sleep, getting so overtired and fractious that they would hardly take milk at feeds. Why do some babies insist on trying to stay awake? Since my retirement I often succumb to an afternoon nap on the nearest couch. I am perfectly comfortable when I drift off and the temperature in my house is thermostatically controlled, yet I frequently wake up with a bone-deep chill. In the interest of helping baby boomers enjoy their future retirement, what is going on?
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