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In this episode, we talk about how to continue with your strength training even when joint issues enter the picture. Because living long enough means aches, old injuries, and arthritis eventually show up. Jim explains why your joints have a shelf life, how most exercise undermines them to reach the muscles, and why isokinetic training does the opposite—protecting and even strengthening your connective tissue. If joint pain has ever made you want to quit, this episode is for you.

Adherence is king. Kyle and Jim Keen explain why the best workout is the one you’ll stick to, how FastFit® removes every reason people quit, and why a plateau is really a cruising altitude worth celebrating.

The questions around peptides have shifted from “what are these?” to “I have to be on these or I’m falling behind.” We break down what peptides actually are, why most aren’t tested in humans, Jim’s own cautionary story of a testosterone crash, and why your foundation has to come first. If peptides are on your radar, listen before you spend a dime.

In this episode, we take on the “skinny fat” epidemic—the hidden health crisis behind the “skinny is back” trend. We get into why losing weight isn’t the same as getting healthy, why muscle is a vital sign, and why GLP medications are necessary but not sufficient without strength training and protein. If skinny is your only goal, this episode explains why that’ll cost you. Give it a listen.

Jim Keen and I take on the idea of “muscle confusion”—the idea that you have to constantly switch up your workouts to keep your muscles growing. Turns out muscles can’t be confused, and most of what feels like progress when you change movements is just skill learning. We also break down the study where our members beat weightlifters at exercises they never even did. Hands down, this is one of my favorite episodes we’ve ever done.

Part two with Jim Keen is all about the “digital weights” machines like Tonal that are everywhere right now. Jim explains why companies spend millions mimicking a barbell on a screen—and why that whole approach is fundamentally limited. The big takeaway: anytime you can select the resistance, it can’t match your real strength. It’s the clearest case yet for why we’re all in on isokinetics.

We kick off with a concept that genuinely tripped me up. I called Jim a few months ago convinced we’d have to change everything about how we describe our machines. His answer reframed how I think about the whole technology: the machine doesn’t adapt to you—and that’s exactly why it works. If you’ve ever wondered what “adaptive resistance” really means, listen to this one.

Nichole Wolf is back to cut through the noise on GLP-1s and hormone replacement therapy. We get into microdosing GLP-1 for inflammation (not just weight loss), why bioidentical hormones beat synthetic, and the delivery systems that actually work. But the biggest takeaway is this: fix your foundation first. I share my own story of taking a pile of supplements that were making things worse.

Hyperbaric oxygen therapy isn’t just for burn victims and divers. Nichole Wolf—certified in HBOT—explains why it’s one of the most powerful tools for reducing inflammation and healing the body.

Why does one glass of wine sometimes wreck you? Why does gluten matter even if your gut “feels fine”? Nichole Wolf explains MCAS, leaky gut, and the free steps anyone can take today.

Panic attacks, brain fog, tingling, insomnia—and every doctor says you’re fine. Nichole Wolf explains why chronic inflammation is the hidden driver and how functional medicine finds the root cause.

This episode introduces Nichole “Coco” Wolf—a board-certified family nurse practitioner, FastFit member, and the founder of Coco Functional Wellness in Austin, Texas. She’s been a nurse for 26 years. And 15 years ago, after her second child, her body fell apart. She went to five doctors. Every one of them told her the labs were within normal range. The last one told her to see a psychiatrist. Nichole was devastated. A compound pharmacist friend pointed her to functional medicine. And with each practitioner she saw, another piece of her life came back. The root cause? Her progesterone was completely gone.

Jim Keen is back—and he’s tackling a misconception that’s been baked into isokinetic training since the beginning: that you have to go as hard as possible, every rep, every session, to get results. The key paradigm shift: strength training uses a tool to deliver stimulus to your muscles, while weightlifting uses your muscles to move a tool. When the goal becomes making a number go up on screen, form breaks down—and that’s where problems start.

The side effects people associate with GLPs are overwhelmingly tied to dosing too aggressively. Semaglutide (GLP only) is what she calls “inelegant and clunky.” Tirzepatide (GLP + GIP) is more complete, better tolerated, and effective at lower doses. Retatrutide (GLP + GIP + glucagon) is coming later this year for patients who are metabolically inflexible and resistant to tirzepatide.

Kimberly explains what endometriosis actually is—adhesions forming in the peritoneal cavity that attach to bowel, bladder, ovaries, and uterus. They’re invisible on imaging. The only way to see them is surgery. And the key question driving this episode: is endometriosis gynecological or metabolic? Resources: Quality-of-life survey