In this interview, Ari Whitten, author of "The Ultimate Guide to Red Light Therapy," reviews the mechanics and basic benefits of red light and infrared light. Whitten, who has a degree in kinesiology, exercise science and movement science, has studied natural health, fitness and nutrition for over 20 years. He's been a personal trainer, health coach and nutritionist for many years, and went on to do a Ph.D. program in clinical psychology.