Daytime drowsy? Put your head in the freezer, says sleep scientist

Kind of, but that doesn’t really describe the caffeine making someone sleepy, just a way to get in a power nap before the caffeine kicks in. In my case, a little bit of caffeine seems to actually cause drowsiness. I’m not entirely surprised, though. I have opposite reactions to the norm to a few medications. Phenobarbital, which is supposed to be a sedative and anti-seizure medicine, apparently causes me to literally try to climb walls (I have no recollection of the experience, but that’s what I was later told I did). Marijuana makes me hyper, anxious, and super paranoid. And lastly, morphine has no effect on me whatsoever. Other opiates do, so that’s just weird.

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