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Once you fall asleep, I’ve long advocated that 7.5 or 9 hours is the perfect number of hours to sleep, give or take a few minutes depending on your 90 minute REM cycles.
If you are doing serious training, that number should be 9 hours PLUS the time to fall asleep. I read somewhere Paula Radcliff sleeps 11 hours a day (or at least “in bed” 11 hours a night)
But I’ll bet most Americans sleep less than that. And to boot, they are using alarm clocks to wake you up in the middle of deep REM sleep, making you feel worse.
Here is another Infographic on why Sleep is Awesome.
The Effects of Sleep Deprivation
If you’re like the average American adult, chances are that you sleep a lot less than you would like to.