Because the behavior affects human health if good behavior will result in continuing good health. If there is a bad bad health will result in poor health, so the behavior is important to health.
This behavior can affect human health if good behavior. It would be beneficial to good health. If you have poor health Will not affect your health is not so good behavior is important to health.
Because the behavior affecting human health if there are good behavior will affect health. หากมีสุข bad image inappropriate will affect the ill health. Therefore, the behavior is important for health.