Proper exercise. Rest when you are tired. Sleep when you are sleepy. Don't drink water only when you are thirsty.
Eat more vegetables, drink less, quit smoking and limit alcohol. If possible, go to the countryside without chemical fertilizer to eat vegetables.
Don't be picky about food.
I won't follow all kinds of lists. Very tired. As long as it is balanced.
At present, he is in good health and has strong resistance.