It seems too late in the night to take sleeping medication and yet way too early to give up on my beauty rest. In general, I'm a champion sleeper, and so when I'm up at night I usually assume that God has something to say to me. My habit is to spend time in prayer and study until sleep overtakes me again.
I have some questions for God tonight anyway (about proms and suffering and otherwise). If I can come close to Him, if I can hear His voice, it will have been a night well spent awake. Regardless, I'll be looking forward to my siesta today/tomorrow.
My soul waiteth for the Lord more than they that watch for the morning: I say, more than they that watch for the morning. Psalm 130:6