Y a person wakes up at night?

There may be many reasons..
Like person may be having bowel problems, urging to go for toilet, a horror dreama or may be some sensual dream which might have disturbed the harmonal balance in the body , S he or she got wake up in night.

Pee
Can't sleep
Boner?
Noise
Nightmare
Woken up
Slept during the day

May be he or she is lonely,

The unlived thoughts from the daytime will popup during the sleep...that's why

To close the window on my neighbours amplified cockeral😬😡😬😡😬

to talk to you :P :P

Drink water

to pee