system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Durring the week i can get 8 hours of sleep and feel like i got 2, but durring the weekend i can get 5 hours of sleep and feel like i got 10. Why?
gpt
When you sleep, you're doing it in cycles that last roughly 90 minutes. Interrupting these cycles mean that your brain doesn't quite finish the recharging it normally does during sleep, and you will feel more tired and like you only got a few hours of sleep. During the weekend, you are probably waking up naturally, without an alarm clock to interrupt your sleep cycles, which is why you feel more rested.