To make a list of the things that are essential for good health you would have to include drinking at least eight glasses of water every day.  Also, you need to have vitamins, proteins, minerals, and sunshine.  Of course, you must eat vegetables, grains, fruits and nuts, to get the vitamins and other nutrients that give you a defense system against disease.  You have to sleep well, in order to function well.  You must exercise to keep your body strong, and you must educate yourself in order to mature and participate in the world.  Healthy means, communicating with your peers, doing work that makes a contribution, and being loved by people that love you back.  It is not just water, air, food and the absence of disease that makes a person healthy, it is a good balance of all the things that I have just listed.  Of all of these good things for your health, love is probably the most important, and it’s right up there with air and water.