Tell HN: my hack to beat insomnia
Whenever I'm tired, but can't sleep, I take a cold shower.  It snaps me awake.  Then tiredness sets in quickly: such is the <i>rate change</i> of tiredness, I seem to go straight though the sleep barrier...usually in a few minutes (presumably).<p>It's not statistically significant yet, but it's worked about four out of four times now.