Exercise Science

Exercise Science

Hosts Martin Gibala, PhD & Stuart Phillips, PhD share exercise science expertise, separating hype from hard facts.

Episodes

  1. Much Ado About Zone 2

    1 day ago

    Much Ado About Zone 2

    Influencers can’t get enough of Zone 2 low-intensity training. So why did Martin Gibala publish a research paper challenging Zone 2 for the general public? In this episode, Stuart Phillips leads Marty through a critical examination of Zone 2.  Marty suggests that very little scientific research exists to support Zone 2 training intensity for most people—either as an effective stimulus for cardiorespiratory fitness or mitochondrial capacity. In fact, if you do between three and six hours of cardio a week, Marty believes that Zone 2 isn’t hard enough for you to efficiently accrue training benefits. In other words, if you’re an amateur athlete subscribing to the much-vaunted rule that 80% of your cardio should be in Zone 2, you’re not as fit as you otherwise could be.  So what is Zone 2 training? And is Zone 2 causing many people to exercise inefficiently, leaving them less healthy than they otherwise might be? What should people be doing INSTEAD of Zone 2? It’s all here, in the latest episode of Exercise Science!  Have a listener question or an idea for an episode? Email us at realexercisescience@gmail.com LINKS Marty and Brendon Gurd’s critical examination of Zone 2: Much Ado About Zone 2: A Narrative Review Assessing the Efficacy of Zone 2 Training for Improving Mitochondrial Capacity and Cardiorespiratory Fitness in the General Population Marty’s coauthor Brendon Gurd on their Zone 2 paper at the Discover Strength podcast.  Luke Carlson calls the “Much Ado About Zone 2” paper the most important scientific publication of 2025 in this blog post summarizing the paper.   HIIT and Zone 2: Marty on the Discover Strength podcast Sperlich paper referenced in this episode: Zone 2 Intensity: A Critical Comparison of Individual Variability in Different Submaximal Exercise Intensity Boundaries Marty was a coauthor on this ACSM/ESSA position statement on exercise intensities Marty was senior author on this Sports Medicine paper on exercise intensity in high-intensity activity, which features the intensity diagram Marty mentions Lifehacker’s Beth Skwarecki notes, Nobody Can Agree On What Zone 2 Is Oura’s heart rate zones Whoop band’s heart rate zones Garmin’s heart rate zones Peter Attia on Zone 2: This Is How You Know If You’re in Zone 2 When Doing Cardio More Attia: This is What Zone 2 Training Looks Like Attia saying 80% of cardio should be Zone 2 Origins of Zone 2: Attia and San Milan in the early days of the trend Find Stu Phillips on most platforms @mackinprof Find Martin Gibala on Instagram, which he just joined, @gibalamj 
 Exercise Science is powered by EverMe. Download EverMe for free at your favourite App store.  DISCUSSION POINTS 00:00 Exercise fads 00:34 Intros 02:30 What Zone 2 is 04:21 No uniform definition 06:02 Lactate threshold 08:10 Zone 2 marker variability 09:54 Ventilatory threshold 11:57 Conflation with moderate 12:58 Improving exercise prescriptions 14:40 Health v. performance 16:04 Moderate intensity is better 16:58 80/20 split 18:45 Better alternatives 19:47 Zone 2 origins 20:39 Wearable intensities 22:09 Threshold testing options 23:14 Training for health 24:21 Take-home message 26:05 Vigorous is better 26:44 Listener question DISCLAIMER The Exercise Science podcast is for educational and entertainment purposes only and is not a substitute for professional medical advice. Strength training and fitness carry inherent risks. Always consult with a physician or qualified healthcare provider before starting any new exercise program or making changes to your diet. The hosts, producers, sponsors and guests of this podcast disclaim any liability for any injuries or losses connected with the information discussed in this show.

    30 min
  2. Strength Training for Everybody!

    26 May

    Strength Training for Everybody!

    Our co-host Stuart Phillips was the senior author on the ACSM’s gold-standard strength training position statement, a.k.a. “the most comprehensive evidence-based guidance to date on how resistance training supports muscle strength, muscle size (hypertrophy), power, and physical performance across adulthood.”  In the premiere episode of Exercise Science, co-host Martin Gibala takes Stu through the American College of Sports Medicine update, the first position statement in 17 years.  Parsing the science, together, Stu and Marty break down why strength is the ultimate compound interest investment for your health span. How important is strength training? Why should you consider strength training 2x per week to be just as important as the other main exercise-related health guideline, 150 minutes of moderate-intensity exercise per week?  Plus: How much strength training is enough? What’s the minimum that you should do? What changed during the 17 years between position stands? And how did a 1940s bodybuilding doctor rehabbing soldiers pave the way for modern strength training?Forget the oiled-up pumping-iron musclehead stereotype. In 2026, strength training is officially for EVERYONE. And if you’re going to listen to just one podcast about the new guidelines — make it this episode of Exercise Science! LINKS Exercise Science is everywhere @realexercisescience: Substack. YouTube. TikTok. Instagram. Apple Podcasts. Spotify. On X you can find us @realexscience.  Stu is everywhere, too, but mostly on Instagram and X. Follow him on TikTok to make him feel nice! Marty just started his own Instagram. Give him a follow! He’s also on X! ACSM Position Stand 2026: The scientific article in Medicine & Science in Sports & Exercise  Here’s the press release about the stand from the ACSM, and a great succinct infographic summarizing the main takeaways Here are the two previous ACSM position stands on strength: 2009 and 2002  Thomas L. DeLorme and the Medical Acceptance Of Progressive Resistance Exercise - Iron Game History Thomas L. DeLorme and the Science of Progressive Resistance Exercise - Journal of Strength and Conditioning Research (Abstract) Among the four students on the position stand, Stu said Brad Currier brought the evidence together, did the lion’s share of the writing and herded the cats All about Ken Cooper, a seminal expert on aerobic fitness who came to understand the importance of strength training  Honoring the legacy of Steve N. Blair, a giant in the field of exercise epidemiology Marty and Stu’s MOOC: Hacking Exercise for Health Exercise Science is produced by Ghost Bureau in Toronto.  DISCUSSION POINTS 00:00 Marty teases Stu 01:20 Episode outline 02:34 What’s a position stand? 03:36 What is the ACSM? 03:52 Building the team 05:00 What’s new in 2026 06:20 Levels of scientific papers 07:10 2026 v. 2009 08:12 Recommendations 09:30 Effort v. failure 10:38 Volume of training 12:30 Home-based options 14:06 Advice for newbies 15:13 Strength explained 18:57 Power explained 19:37 Why now? 22:17 Weight training for women 23:03 Capt. Thomas L. Delorme 25:36 Circus strongmen 26:30 Outdated philosophies 28:01 Barriers to entry 29:33 No pain, no gain is dead  31:45 Safety 33:30 Where to start 35:00 Takeaways 35:50 Listener question 36:50 Outro DISCLAIMER The Exercise Science podcast is for educational and entertainment purposes only and is not a substitute for professional medical advice. Strength training and fitness carry inherent risks. Always consult with a physician or qualified healthcare provider before starting any new exercise program or making changes to your diet. The hosts, producers, sponsors and guests of this podcast disclaim any liability for any injuries or losses connected with the information discussed in this show.

    38 min
  3. The Exercise Science Podcast Coming Spring 2026

    Trailer

    The Exercise Science Podcast Coming Spring 2026

    Kinesiology professor Martin Gibala is the worldwide expert on time-efficient cardio. Kinesiology professor Stuart Phillips is the global expert on strength, muscle development and protein. In Exercise Science, these two friends and colleagues translate the world of exercise science for the rest of us — separating the hype from the hard evidence.

    3 min

Trailer

About

Hosts Martin Gibala, PhD & Stuart Phillips, PhD share exercise science expertise, separating hype from hard facts.

Information

  • Creator
    Exercise Science
  • Years Active
    2k
  • Episodes
    3
  • Rating
    Clean
  • Copyright
    © Exercise Science
  • Show Website
    Exercise Science

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