Paleo Lifestyle and Fitness Podcast, Episode 63

Podcast PicSarah and I are back with Episode 63 of the Paleo Lifestyle and Fitness Podcast!

Click here to listen or find us on iTunes. Please submit your questions to paleopodcast@gmail.com and if you have a spare minute, please be sure to leave us a review on iTunes!!  Thank you very much and enjoy!

Here’s what we discuss in this episode:

  • More on body loathing.  (3:38)
  • Fueling endurance exercise.  (19:15)
  • The paleo logic of lifting vs. sprinting.  (30:40)

Comments

  1. Matt Stehr says

    Jason,
    Thanks for the great podcast and all the great information that you put out. I’ve really enjoyed listening to your advice and I’m going through some of the back episodes to catch your “pearls of wisdom.”

    In podcast #63 you replied to the question about carb/fat utilization during running by stating that after glycogen and glucose is utilized that the body taps into muscle protein through gluconeogenesis. I’ve read numerous ex phys texts and I’ve never come across this in the past. Every text I’ve read indicates that the longer the activity, the more the body will turn to fat as a fuel. The body prefers to use glucose and fat and will only turn to protein as a last resort. You seem to imply that marathon pace is too fast to utilize fat, but clearly a marathon is an aerobic event, and as long as oxygen is present the body can utilize fat through beta oxidation. Some amino acids will be utilized, but the bulk of energy will come from fatty acids. Put another way, why would our bodies prefer to burn hard-earned muscle when we all have abundant fat stores? I’d call that a bad design. Do you have any references that state that the body is burning muscle rather than fat as a fuel for long-duration aerobic events?

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