I do find it curious that the body seems to need to sleep longer after long bouts of insomnia (or a week of 18hr work days). I think the hypothesis "You need an

I do find it curious that the body seems to need to sleep longer after long bouts of insomnia (or a week of 18hr work days). I think the hypothesis "You need an extra hour of sleep for every hour missed" is disproven, but the body clearly needs a single dose of extra recovery time after exhaustion.