You have to think this the other way around: why is it so difficult for many humans to fall asleep? Because falling asleep quickly is the default.
Cats are actually more active during the night because that’s when it’s easier to hunt without being seen, which is why they have their senses (especially their sight) adapted for it.
Modern city-dwelling humans on the other hand lost their natural sleep cycles, and thus their ability to quickly fall asleep & wake up due to a number of factors:
– Constant artificial bright light
– Artificial wake/sleep times – industrialization forced us into time patterns like working 9-5, regardless of what our bodies want
– Near constant mental stimulation from mobile phones, running TVs, radio, …
Cut out screens – aside from maybe an e-reader – at least 30 minutes before bed, and reduce the brightness around you as well and you’ll probably won’t need the melatonin anymore.
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