I was the same as you until about 26-27. I could operate on nearly no sleep. As a teenager and throughout my twenties i didn't really like sleeping. I'd stay up

I was the same as you until about 26-27. I could operate on nearly no sleep. As a teenager and throughout my twenties i didn't really like sleeping. I'd stay up past 12 most nights and wake up around 7 as a teenager and closer to 5 or 6 from about 21 until 27-28 or so. Then I just started appreciating sleep. I started going to bed around 9:30 or 10, feeling like shit if I get less than 8 hours consistently for some time in a row and just generally preferring consistency and routine for my sleep schedule, where as before I didn't really care or think much about it.