The human body is constantly undergoing change. Atoms of bone, tissue, flesh, muscle, fat and fluids are constantly used and removed from the system, and new atoms are constantly being manufactured in the wonderful laboratory of the body.

Our physical body is like a plant. And what does a plant require to bring it up from seed to sprout, from sprout to plant, with flower, seed and fruit?

The answer is simple— fresh air, sunlight, water and nourishing soil— it must have these things in order to grow to healthy maturity. And our physical body requires just the same things— all of them— in order to be healthy, strong and normal. Fresh air, sunlight, water and food.