This only answers the first part of your first question, but there was a poll last month on the topic Hours of sleep I get on an average weeknight.

Recently I unthinkingly had a nice big cup of black tea shortly before going to bed (having been mostly avoiding caffeine for the last few years). I lay in bed all night unable to fall asleep. Not going to make that mistake again!

In reply to Re: Sleeping Patterns by chipmunk
in thread Sleeping Patterns by arashi

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