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Nowadays, a lot of teenagers depend on technology and many of them find it difficult to live without cell phones, computers and the Internet. Indulging in the virtual world can be harmful to teenagers both physically and mentally. Instead of participating in outdoor activities like soccer, skating or cycling, many boys and girls prefer to sit in front of the computer or the TV. Others are addicted to using their cell phones to text, chat and check Facebook updates all the time. They prefer these activities perhaps because they don't have to think or imagine as much. Teenagers now have less time to read, exercise or hang out with family and friends because they prefer the unreal world. For me, I think the best recreational activity for teenagers is volunteering and parents should encourage teenagers to spend their free time in leisure activities because it is very useful.