Varies. Last night I slept for 8. Night before, 5. I have a weird thing where I can't get out of bed because I feel too tired even if I've slept like 10 hours, so on some days when I can't force myself out I end up sleeping for 12-14 hours which makes me feel like shit the rest of the day. That's why I prefer going to bed around 3am, so when I wake up at 11 I force myself out of bed because it's already late and I've only lost 8 hours to sleep. Otherwise if I go to bed around 10 or 11 and I wake up at 6am, I think it's too early and go back to sleep, so I end up losing 10+ hours.