Running is becoming popular these days. Many of us run for our health. Doctors say many of the health problems come from these bad habits: eating too much, drinking too much, smoking, and not taking enough exercise. Doctors tell us. "Fat and drink less, don't smoke, and exercise more."

Running is a good form of exercise because it helps build a strong heart. It also helps most people lose weight. One 68-year-old woman runs three times a week. She runs to lose weight. ""I love to eat," she says.

Running is good for health in other ways, too. Many runners say running keeps colds and other small health problems away. "Running is my doctor," says one man.

Running can also help people to relax. So today men and woman of alleges enjoy running.

My father uses the Internet three times a week.

Many students get ill easily. They have to go to hospital and may miss a lot of classes. What can we do to keep healthy? Here are some tips:

Healthy food. You should eat less fast food but more vegetables and fruit. You'd better drink 500ml milk every day. Remember to eat breakfast.

Enough exercise. Doing exercise is important. It makes you more athletic. You can play some sports after class or on weekends.

Happy smiles. Smile is a good way to make you healthy. Try to find things that can make you laugh. Remember that smile is the best medicine to cure(治疗) your illness.

Good rest. If you want to get a good grade, you must have a good rest. As a famous saying goes, "Early to bed and early to rise makes a man healthy, wealthy(富有的) and wise(聪明的). "