Whilst I feel groggy every morning, I notice that I operate better when I don’t oversleep, if I stay up late and get up somewhat early, let’s say maybe 6 hours sleep, why is this? They say people need 7 / 8 hours of adequate sleep for good health.
In: Biology
It could be that you genuinely need less sleep.
It could be that you’re overtired. Our sleep is regulated by hormones and when we don’t sleep when our hormones suggest we should, we produce adrenaline/cortisol instead. This can cause us to wake up early and still have the stress type hormones going.
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