Sun - Sunlight on your body, 30 to 60 minutes a day for vitamin D, detoxification and more energy. Be aware that if your body is still toxic to go slow with it. Once the temple becomes more lean, clean, and serene, the more you will be able to sun bathe without any ill effects. Skin Cancer is simply toxins coming out of the skin.
Air - Fresh air, long, slow deep rhythmic breathing for detoxification, energy, clarity, peace, harmony, inspiration, balance and strength. There is more to the air than just the oxygen. The ancients have known for thousands of years what scientists are now proving to be an unlimited amount of potential energy existing between the particles that we can see with our naked eye. This energy is called prana, life-force, spirit, chi, ki, kundalini, and so on.
Water - Visit the ocean, drink pure, alkaline, antioxidant, structured water at your best. If you have access to geothermal water created by Mother Earth you are in good shape. However the next best step is to get a powerful ionization device with proper filtration.
Earth - Walk in nature, eat plants from organic, mineral and enzyme rich soil to balance the electro-magnetic matrix of the human body-system. Just standing directly on the Earth without shoes or socks and being present to your breath and the elements around you can recharge your body energy.