Because I have arthritic issues, I try to incorporate as much alkaline forming food as I can into my diet. You can read more about alkaline foods here if you'd like, but basically it's just a way to get the body's pH, which can be slightly acidic due to the typical American diet, to be slightly alkaline. When our bodies are too acidic a number of health problems can arise: low energy, chronic fatigue, arthritic/joint issues, frequent headaches, intestinal issues, etc. If you're suffering from any of the above, try adding some of the above foods and see if it helps!
An international yoga instructor writes a healthy living blog with an emphasis on yoga.