The Truth About Zone 2 Cardio, Mitochondrial Health & How REHIT Beats It (In Less Time!) With Ulrich Dempfle

Ben Greenfield Life

Ben Greenfield

Education, Fitness, Self-improvement, Health & Fitness

4.6 • 5.2K Ratings

🗓️ 24 April 2025

⏱️ 79 minutes

🔗️ Recording | iTunes | RSS

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Summary

In this episode with repeat guest Ulrich Dempfle (you can check out our first show together here), you’ll get to explore what actually works when it comes to cardio—whether you’re chasing peak performance, fat loss, or just trying to live longer and feel better.

Whether you’re short on time or just want results without the guesswork, this episode is packed with cutting-edge insights to help you train better, live longer, and stay metabolically sharp.

Full show notes: https://bengreenfieldlife.com/zone2myth

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Transcript

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0:00.0	My name is Ben Greenfield, and on this episode of the Boundless Life podcast, we've spoken about hit and how hit is very effective.
0:09.2	Researchers then looked for the minimum effective dose of hit and found that 22nd sprints.
0:20.8	So 40 seconds total at maximum intensity
0:25.3	creates a very robust, very strong training stimulus
0:30.7	through that AMP pathway,
0:34.8	which actually also releases and activates PGC1 Alpha, your body's master
0:41.7	regulator of mitochondrial biogenesis, and creates a very robust stimulation to also develop
0:50.4	more and more efficient mitochondria and a number of other adaptations that very substantially
0:58.6	improve your VO2 max, your cardiorespiratory fitness, with much, much less time.
1:05.2	Welcome to The Boundless Life with me, your host, Ben Greenfield.
1:09.7	I'm a personal trainer, exercise physiologist, and nutritionist, and I'm passionate about
1:14.3	helping you discover unparalleled levels of health, fitness, longevity, and beyond.
1:26.0	You've heard of the vagus nerve.
1:27.9	There's all sorts of ways to stimulate it, chanting and singing and humming and gargling and yoga and dipping your head in cold water.
1:35.4	But you can actually trigger your vagus nerve very quickly and very effectively using the latest biohacking technology of vagal nerve stimulation.
1:45.7	There is this device that's called the True Vega,
1:47.9	total drug-free solution to balance your nervous system for better sleep,
1:52.0	better focus, management of stress.
1:54.4	It is award-winning technology,
1:57.0	and it just takes two minutes per session.
1:59.2	You hold this thing up to the side of your neck, even though technically you could use it like electrical acupuncture anywhere on your body.
2:05.8	But specifically for the vagus nerve, it has clinically proven vagus nerve stimulation to calm your fight or flight response in just minutes called the true baga.
	...

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