How to keep fit?

We should abide by some rules of health to keep fit. At first we should eat a balanced diet because a balanced diet continues all food value. We should drink plenty of water. The kidneys are the body's filter. They can't work efficiently without sufficient water. After that we should remain neat and clean. Then we should go to bed early and rise early. Next we should take physical exercise regularly. By following the above rules we can keep fit.