008: The Science of Freediving: Hold Your Breath and Extend your Lifespan

You probably already know that I’m an exercise physiologist—and I’m currently pursuing a master’s degree in applied physiology with a concentration in nutrition for health and human performance—but I’m also a freediver and a spearfisherman. Anybody can freedive but I help people take it to the next level by biohacking their lifestyle.

Have a pen and paper ready because, in this episode, I dive deep (pun intended) into the physiology of elite-level freediving. From breathwork to training, I break down a bunch of techniques so that you can dive deeper and hold your breath longer. I also dish out tips on diving gear and nutritional supplements so stay tuned until the end!

Episode Highlights:

  • 00:58 – Why I freedive
  • 05:50 – Cryotherapy or cold exposure therapy to find calmness
  • 07:02 – The benefits of diaphragmatic, nasal, and box breathing
  • 10:15 – “The best training for any kind of sport is going to be that which closely mimics the sport itself.”
  • 12:12 – VO₂ max = cardiac output * A-VO₂ difference
  • 15:12 – Why high-level divers do HIIT and blood flow restriction training
  • 16:48 – How to estimate your maximum heart rate
  • 17:18 – How to increase your oxygen-carrying capacity
  • 19:21 – On carbon fiber fins and low-volume masks
  • 22:00 – Divers would benefit from more BCAAs, electrolytes and carbs

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