Dr. Maffetone\xa0teaches us that
\nBuy Dr. Phil Maffetone's\xa0Big Book of Endurance Training and Running
\nBuy\xa0The Big Book of Health and Fitness
\nPrevious Podcast with Dr. Maffetone:
\n\nTake the Tailwind Challenge at:\xa0Tailwind Nutrition\xa0\xa0\xa0
\nCheck out the cool headlamps made for trail running at\xa0Petzl