For the love of god, one more drink an endorsement of the nightcap
"Alcohol affects sleep onset, duration and architecture," as the Lexicon of Psychiatry, Neurology, and the Neurosciences puts it, "increasing slow wave sleep"—the deep, wake-up-groggy kind—and "reducing the amount of rapid eye-movement (REM) sleep"—the kind that … well, we don't know exactly what it does, but we'd die without it. What's more, "as the night progresses blood alcohol levels fall," leading to "heightened arousal … and recurrent awakenings associated with tachycardia, sweating, headaches, and intense dreams or nightmares." There's still more, but if all that isn't enough to make you lay off the sauce at bedtime, you're beyond telling. Like we are.
See, against all that unpleasant stuff, there's this: It's late. You're in bed, comfortable. The room…