The Catalyst

Chris Cooper

The Catalyst is your source for information about improving fitness and health. Once a week, host Chris Cooper of Catalyst Fitness bridges the gap between science and ground-level tactics in gyms and coaching practices. The Catalyst is perfect for coaches, trainers, nutritionists, athletes and general exercisers who want to learn more about training. Be sure to subscribe!

  1. 4d ago

    Is Sitting All Day Undoing Your Workout?

    You worked out this morning. You crushed it. And now you've been sitting at a desk for eight hours. Here's something most people don't know: being sedentary and exercising are two completely separate biological variables. You can be both — regularly active in a gym, and chronically sedentary the rest of the day. And the research is clear that sitting is quietly undoing a significant portion of the work you're doing. In this episode, Coach Chris explains the "active couch potato" phenomenon — one of the most well-documented and least-discussed topics in fitness — and what to actually do about it. The mechanism: Lipoprotein Lipase, an enzyme that clears fat from your bloodstream, shuts down within 60 to 90 minutes of continuous sitting. Your gym session turns it back on — but the moment you sit back down, it drops again. The enzyme responds to what your body is doing right now, not what it did two hours ago. A 2016 Lancet analysis of over one million adults found that 60 to 75 minutes of daily moderate-intensity activity was needed to significantly offset the risks of sitting eight-plus hours per day. Most people do 30 to 45. A Finnish study found that active couch potatoes — people meeting exercise guidelines but sitting ten-plus hours daily — had worse insulin, worse triglycerides, and lower HDL than people who moved throughout the day, even with the same formal exercise volume. The fix isn't more gym time. It's breaking up sitting every 30 to 60 minutes. Book your free No-Sweat Intro at catalystgym.com/free-intro.

  2. Sep 12

    Does the 30/30/30 Rule Actually Work? What the Research Says + Next Week’s Catalyst Workouts

    I break down the viral 30/30/30 rule—30g protein within 30 minutes of waking plus 30 minutes of low-intensity exercise—explaining its origins with Tim Ferriss and Gary Brecka and what research supports. I cover how a 30g high-protein breakfast is well-supported for satiety and adherence, while the strict 30-minute timing window and the idea of special morning sequencing have little to no meaningful evidence; as of mid-2026, the combined 30/30/30 protocol hasn’t been tested in a randomized controlled trial. I explain why people still get results: it packages two effective habits (protein and daily movement) into a simple routine, and I suggest keeping the habits while dropping the “magic window” claims, with an invite to book a free No Sweat Intro at Catalyst. I also preview our group workouts for the week of September 14th, including strength lifts, HIIT couplets, hybrid race simulations, and a Sunday zone-two session. 00:00 What Is 303030 00:44 Origins And Viral Claims 01:50 Protein Breakfast Evidence 02:33 The 30 Minute Myth 03:19 Exercise Timing Reality 04:45 Why People Still Succeed 06:20 How To Apply It 08:09 Catalyst Intro Offer 08:27 Next Week Training Overview 08:54 Monday Front Squat Day 09:59 Tuesday Press And HIIT 11:04 Wednesday Hybrid Race 11:52 Thursday Deadlift And Pullups 12:35 Friday Clean And Jerk 13:15 Saturday Hybrid Adventure 13:44 Sunday Zone Two Homework 14:03 Final Invite And Wrap

  3. Sep 4

    Can ChatGPT Replace Your Personal Trainer?

    A study published in the Journal of Sports Science and Medicine in 2026 found that ChatGPT outperformed certified personal trainers in answering common exercise questions — rated 90.7 percent accurate. That headline is real, and it deserves an honest response rather than a defensive one. In this episode, Coach Chris addresses the research directly, acknowledges what AI genuinely does well, and explains five specific things it still cannot do. The accuracy finding is legitimate. AI is excellent at explaining fitness concepts, generating programming frameworks, and synthesizing research. For motivated, self-aware, injury-free people who want general information, it's a genuinely useful tool. But the same study revealed a second, less-reported finding: only 41.2 percent comprehensiveness. AI gives you accurate general answers — it just doesn't know what it doesn't know about you. Your injury history. Your recovery state. Your schedule. What your form actually looks like. Whether you showed up. The five things AI cannot do: see your form, know your full context, provide real accountability, adapt to your life in real time, or flag its own errors in a way beginners can identify. The honest conclusion: use AI to understand the science. Use a coach to apply it to your specific life. A July 2026 paper in JMIR put it best — the ideal is a hybrid approach combining AI tools with periodic expert oversight. Book your free No-Sweat Intro at catalystgym.com/free-intro.

  4. Aug 27

    The Truth About Muscle Memory (Can You Really Get It Back Faster?)

    If you've taken time off from training — a few months, a summer, a year after a baby, time out for injury — you've probably thought: I'm going to have to start all over again. The science says otherwise. In this episode, Coach Chris breaks down the actual biology of muscle memory — not as a motivational concept, but as a documented physiological phenomenon happening at two distinct levels. First, neural memory. Motor patterns stored in your brain and spinal cord stay largely intact during detraining. That's why strength can bounce back surprisingly fast in the first weeks after returning — your nervous system is re-activating pathways it already knows, not building new ones. Second, myonuclear memory. A 2024 Journal of Physiology study followed participants through training, detraining, and retraining. Myonuclei — the command centres inside your muscle fibres — increased by 13 to 33 percent during initial training and were maintained throughout 16 weeks of detraining, even as muscle size decreased. When retraining began, those retained myonuclei provided a head start on protein synthesis. A 2018 human study added a third layer: epigenetic changes — a "switched-on-ready" state in muscle growth genes — that persisted through a full train-detrain-retrain cycle. You are not starting from zero. You have more cellular machinery than a true beginner, better neural efficiency, and primed genes. The longer you trained before, the stronger the effect. Plus: the two caveats that matter before you go straight back to your old weights. Book your free No-Sweat Intro at catalystgym.com/free-intro.

  5. Aug 21

    Why Am I Not Losing Weight Even Though I'm in a Calorie Deficit?

    You're tracking your food. You're eating less than you burn. The scale hasn't moved in two weeks — or worse, it went up. Before you conclude that your metabolism is broken or that calories don't work, understand one critical fact: body weight and body fat are not the same thing. The scale is measuring fat, muscle, water, glycogen, and everything in your digestive tract. And water moves dramatically. In this episode, Coach Chris walks through the most common reasons a calorie deficit stops producing visible results on the scale — starting with the uncomfortable one. Research shows people underestimate their calorie intake by 12 to 40 percent consistently. Omitted cooking oils, beverages, sauces, and eating back inaccurate fitness tracker estimates are the biggest culprits. The deficit is usually smaller than the app suggests. Beyond tracking, water retention is hiding genuine fat loss. New exercise causes muscle inflammation and fluid retention for two to three weeks. High cortisol from stress triggers water retention. Menstrual cycle fluctuations can mask three to seven pounds of fat loss. And the "whoosh effect" — where fat cells temporarily fill with water after releasing stored fat — can keep the scale flat for days before it drops suddenly. Add in body recomposition (building muscle while losing fat), metabolic adaptation, and the finding that 5.5 hours of sleep versus 8.5 hours on the same calorie deficit produces 55 percent less fat loss — and the full picture becomes clear. Better measurements. Longer timeline. That's the answer. Book your free No-Sweat Intro at catalystgym.com/free-intro.

  6. Aug 16

    Zone 5: Your Highest Gear (And How to Actually Use It)

    Zone 5 is the zone most people think they're training in — and rarely actually are. It sits at 90 to 100 percent of your maximum heart rate, at or above VO2max, and can be sustained for somewhere between 30 seconds and 2 minutes at true maximum intensity. And it raises the ceiling for everything else. When Zone 5 develops, your Zone 4 starts to feel like Zone 3. Your threshold climbs. The entire spectrum shifts. In this final episode of The Catalyst's heart rate zone series, Coach Chris explains what Zone 5 actually is, how to accumulate meaningful time at VO2max without burning out — and the one tactical insight most people miss. That insight: Zone 5 requires your cardiovascular system to be the limiter, not your muscles. Heavy slow movements cause your legs to fail before your heart ever peaks. Rhythmic, sustained, large-muscle movements — running, rowing, cycling, hill sprints — allow the cardiovascular system to truly max out. You'll also learn the Billat 30/30 protocol, developed by French physiologist Véronique Billat, which exploits the VO2 lag phenomenon to accumulate more time at VO2max than most athletes think is possible in a single session. And newer research on how to progress from 30/30s to longer intervals as fitness develops. One session per week. Warmed up. With purpose. That's how you use your highest gear. Book your free No-Sweat Intro at catalystgym.com/free-intro.

  7. Aug 10

    Ozempic, Diet and Exercise

    Everyone has an opinion on Ozempic right now — especially with a Canadian generic hitting the market. But after almost thirty years of coaching, here's what might surprise you: I'm not against it. In this episode, I break down why GLP-1 medications like Ozempic aren't a moral failure to need, and aren't a magic fix either. I share the story of a client whose bariatric surgery completely changed how I think about medical weight-loss interventions, walk through what the research actually shows about muscle loss on these drugs, and lay out exactly what you need to do — starting the day you begin the medication — to protect your metabolism, your mitochondria, and your long-term fitness. You'll learn why muscle loss is the hidden risk nobody talks about, what "zone two" training actually means, and why one hard workout a week matters more than you think. Ozempic can be a legitimate first step. This episode covers what comes after. Register for a free intro at catalystgym.com

  8. Aug 7

    Zone 4: How to Get Through the Painful Zone (And Why It's Worth It)

    Zone 4 hurts. Not in a vague, uncomfortable way — in a specific, accumulating, burning way. Lactate is building faster than you can clear it. Every second feels longer than it should. And it is absolutely worth it. In this episode, Coach Chris explains exactly what Zone 4 is, why it produces the most direct improvements to your lactate threshold, and how to actually get through it — physically and mentally. The physiology first: the burning sensation in Zone 4 isn't caused by lactic acid itself. It's caused by hydrogen ion accumulation. Lactate is actually a useful fuel — your slow-twitch fibres burn it. Zone 4 training teaches your body to shuttle lactate from where it accumulates to where it gets burned, faster. The ceiling rises. What feels like Zone 4 today starts to feel like Zone 3. The formats: the Norwegian 4×4 protocol — four intervals of 4 minutes at Zone 4, 3 minutes active recovery between — is one of the most researched structures in endurance science. Tabata-style intervals (20 seconds on, 10 seconds off) work for most people at Zone 4 to 5 intensity. The mental game: dissociation — counting backward, the backward alphabet, chunking to landmarks — reduces perceived exertion and improves tolerance in ways research consistently supports. And a training partner produces a measurable physiological effect that makes Zone 4 efforts feel survivable in ways solo training simply cannot match. Book your free No-Sweat Intro at catalystgym.com/free-intro.

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About

The Catalyst is your source for information about improving fitness and health. Once a week, host Chris Cooper of Catalyst Fitness bridges the gap between science and ground-level tactics in gyms and coaching practices. The Catalyst is perfect for coaches, trainers, nutritionists, athletes and general exercisers who want to learn more about training. Be sure to subscribe!

Information

  • Creator
    Chris Cooper
  • Years Active
    2022 - 2026
  • Episodes
    139
  • Rating
    Clean
  • Copyright
    © 2024 The Catalyst
  • Show Website
    The Catalyst