How important is sleep?

On average, I get about 3-4 hours of sleep. I don't see the need to sleep if I'm not tired. Occasionally I'll get bad migraines or dizzy during the day, but I don't think there is any connection. Is there really anything bad that can happen from not getting a lot of sleep?
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+1 y
I cut back my hours of sleeping to avoid having nightmares and it worked. I feel like if I were able to get more sleep than I'm used to now, they would just come back
How important is sleep?
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