A organization in London made a research and found that teenagers in London pass almost all the day in front of the computer. They just sleep 6 or 8 hours per day when the recommended are 9 or 10 hours per day.
In Brazil the teenagers sometimes don't sleep because of the computer. Another research said that even been a country underdeveloped, Brazil has the biggest access to the worldwide computer network. About 20 milion people access the Internet and the higher layer are teenagers.
All the teenagers in the world like spend time in the Internet but you don't need waste your life and stay all the day in front of the computer. People, don't waste your life!