For HSC, 11:30PM to 5:30AM (had to wake up early due to travel) was ideal, with the infrequent (or perhaps not so infrequent) all-nighter for assignments and tests (which I don't encourage you to do).
Usually I go to bed at around 11pm but lately it's probably taken about 20 minutes to just fall asleep (that's what it feels like at least). Then I actually get up at around 7:45-8am
Wow everyone sleeps so little...i wish i could do that but i die from anything less than 8-9 hours
so usually 9.30ish to 7.00
but i wake up at 4 to pray for like 5minutes and then go back to sleep
I will create a drug that accelerates the body's restoring functions during sleep so that you only need to sleep for 30 minutes and then you're brand new!