Is it normal for a teenage boy to be able to play World of Warcraft three days running

Absolutely! My husband is 42 and he plays every day. When he and my son, 21, go on big 25 man raids together they often play into the middle of the night, or perhaps I should say into the middle of the morning! I have seen my husband get lost in the game so deeply that he didn't stop for 22 hours---in one sitting!!! So, don't worry, it is normal. It's that addicting. That is why World of Warcraft is often referred to as World of War Crack!