As we all know, health is very important. However,many teenagers don't pay any attention to their health, especially during the holiday. They spend too much time watching TV, playing computer games, and chating on the Internet all night, which brings many bad effects to them.Firstly, staring at a TV for a long time will cause nearsightedness. Besides that, their bodies will become more and more weak. Last but not least, they usually communicate with others on Internet instead of face-to-face. They will be out of touch with their family and friends, which will hinder their development in the future. In my opinions, health is the most important in our life. Without health, all of our achievements will be go up in smoke.

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