A perscription, schedule III, narcotic analgestic (pain killer) containing hydrocodone and acetaminophen (Tylenol). Hydrocodone is actually an opiate, like heroin, that gives an amazing euphoric body high but it's also very addictive (although not nearly as addictive as heroin).
Unlike basketball and football, there is no way of knowing how long a game of volleyball will be. Like the others have already said, whoever wins the first 3 out of 5 sets wins the game. How long that can take can be anywhere from 30 minutes to 2 hours. (I've played in both).
Warm-Up Session. The rules provide time for teams to warm up before a match. According to FIVB regulations, if teams have already had a court available to use, they may warm up for six minutes on the game court. Otherwise, teams are entitled to a 10-minute warm-up session. Team captains may request separate warm-ups lasting either three or five minutes.