Best of Series- Environmental Conditioning

In this best of series episode, natural health expert and Mercola.com founder Dr. Joseph Mercola and Scott Carney, author of "What Doesn't Kill Us: How Freezing Water, Extreme Altitude and Environmental Conditioning Will Renew Our Lost Evolutionary Strength" discuss how environmental conditioning can help boost mitochondrial function and metabolic efficiency. To read health articles, visit Mercola.com.