Brad Kearns tackles more interesting Q&A from Primal Endurance podcast listeners and book readers. Submit your questions at www.primalblueprint.com/endurance and they will get covered on the air.  While the questions relate to the specific needs of the individual, the answers are presented in a manner that applies to a broad audience. Listen and enjoy learning about the challenges and successes of your endurance peers, and come away with plenty of practical tips to help improve your training and competitive results. Arnie (58) asks about his fat adaptation and its impact on his performance. [00:01:37] Do I lose my flight or fight response when I train aerobically? [00:02:24]  The fast twitch muscle fibers that are not using oxygen do not need a high volume of training. [`00:07:22]  How many carbs do I need to consume so that I have sufficient glycogen during high demand occasions? [00:09:33]  What happens to us when we burn too much protein? [00:14:55]  When you are healthy, getting adequate sleep, eating nutrient intense diet, you are going to get the most out of your body. [00:19:44]  Paul asks why he can't walk a mile and get his heart rate below 160? [00:22:16]