Living healthy is good. It is a requirement for us to live in this world and fulfill the purpose of God for our lives. We need a healthy body to be able to do good to all men. We have learned that God created us for good works. We cannot do that when we are sickly. A sick and weak person cannot do good work. We won't be able to do good when we are not healthy. So, having a healthy life is a basic requirement to do the purpose of God.
We should not just eat anyhow. When we eat, we should eat with a heart that is free to strive. That is why we should always forgive those who offend us. We should avoid having offenses with people. We should be peacemakers. We dwell peacefully with people. We should be good neighbors where we are living. So, for us to have good health, we must learn to avoid offenses. Eating with offenses burdens our body system. It gives us trouble in our body instead of good health.
Also, eating rightly according to scientific and nutritional advice is good. We should learn proper combination of nutrients to make healthy eating.