This composition about health is 500 words.

Cherish life and grow up healthily.

Bad habits are formed unconsciously. We should pay attention to and get rid of some small problems and bad habits in our lives, and grow up healthily and happily.

I once had a little problem-when I was eating, reading and playing with friends, I would pick my nose ... Anyway, I always dug it involuntarily, and my mother repeatedly reminded me, but it didn't help much.

After reading the book "Cherish Life and Grow Healthy", I learned a lot of knowledge. It turns out that there are about 400 thousand bacteria in one hand! It's terrible. I don't know how many bacteria get into my nostrils every day. Now, I have corrected the bad habit of picking my nose, but I still have sinusitis. The doctor said, "Take time to treat it, or there will be polyps in the nasal cavity." After listening to the doctor's words, I was scared to death, because in that case, I need surgery to cure it.

Bad habits sometimes bring us great trouble. SARS, once popular, was the first infectious disease that hit the whole world in that century. It spreads through respiratory tract, digestive tract and contact. Its large-scale outbreak and rapid spread have a lot to do with our usual bad living habits and environmental pollution. That year, bird flu broke out in China, Japan, Viet Nam, Laos, Thailand, South Korea, Taiwan Province Province, Pakistan and Indonesia. Among them, Vietnam has also found cases of human-to-human avian influenza. These diseases caused by viruses and bacteria happen around us. If you don't pay attention to hygiene, these viruses and bacteria may take advantage of it and affect your health. Healthy and happy growth!

Therefore, each of us should develop good hygiene habits from childhood, care for the environment and cherish our own lives.

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