Troponin University · Lecture library
Troponin University
Teaching from Justin Harris, alongside clearly labeled reference lectures. Subscriptions unlock the complete lecture. See how the library is reviewed.
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- September 27, 2026Drive nutrition: Omega-3 to Omega-6 BalanceFrom Justin
- September 27, 2026Drive nutrition: Sleep and Nutrient InteractionFrom Justin
- September 25, 2026Drive nutrition: Fat-Soluble Vitamins (A, D, E, K)From Justin
- September 25, 2026Pulling Cardio Back When You're Recovering from a Long DietFrom Justin
- September 25, 2026GRAS: 5/3/1 Powerlifting Meet Prep (Wendler)Reference
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- From JustinSeptember 27, 2026 · 5 min read
Drive nutrition: Omega-3 to Omega-6 Balance
It's the ratio that matters. Most people aren't short on omega-6; they're buried in it from the seed oils in processed and restaurant food, and not getting nearly enough omega-3 to balance it out. Cut…
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- From JustinSeptember 27, 2026 · 6 min read
Drive nutrition: Sleep and Nutrient Interaction
Sleep and diet feed each other. Run short on sleep and hunger goes up, cravings for sugar amplify, and insulin sensitivity is affected. Going the other way, enough protein through the day, with a…
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- From JustinSeptember 25, 2026 · 5 min read
Drive nutrition: Fat-Soluble Vitamins (A, D, E, K)
Fat-soluble vitamins, meaning A, D, E and K, need dietary fat in the same meal to get absorbed, and your body stores them instead of flushing them out. That's why I list "added fats" explicitly in my…
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- From JustinSeptember 25, 2026 · 3 min read
Pulling Cardio Back When You're Recovering from a Long Diet
If you spent months grinding through long cardio sessions to keep fat loss moving — whether that was a hard cut or the back half of a contest prep — this next part feels counterintuitive: when it's…
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- ReferenceSeptember 25, 2026 · 1 min read
GRAS: 5/3/1 Powerlifting Meet Prep (Wendler)
GRAS endorsed-source digest for 5/3/1 Powerlifting Meet Prep (Wendler). Use this as Justin-approved supporting logic only; Justin-authored KB remains the primary authority. [\[1\]](#source-1)
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- From JustinSeptember 24, 2026 · 8 min read
Triptorelin monograph
This is not a bodybuilding drug in any sane, evidence-based sense. It does act to increase sex hormones at first -- until it dramatically suppresses them as a treatment for prostate cancer. It has a…
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- From JustinSeptember 24, 2026 · 9 min read
Tirzepatide monograph
Tirzepatide is solid for fat loss -- it's a dual GIP/GLP-1 receptor agonist that's FDA-approved for diabetes and weight management, so it has real clinical backing unlike some of the research…
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- ReferenceSeptember 24, 2026 · 8 min read
Thymosin alpha-1 monograph
This is an immune peptide, not a muscle-builder. If someone is selling it as a recovery or performance magic bullet, the science doesn't fit. The real benefit is in clinical immunology and hepatitis…
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- ReferenceSeptember 23, 2026 · 8 min read
Thymalin monograph
Thymalin is a low molecular weight polypeptide complex studied for anti-aging and immunomodulatory effects. It has been in Russian clinical practice since the 1980s. While it does have the clinical…
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- From JustinSeptember 21, 2026 · 1 min read
Tesofensine monograph
Tesofensine is a real appetite-suppressant candidate. It is a triple monoamine reuptake inhibitor — blocking the reuptake of norepinephrine, serotonin, and dopamine. From a pharmacokinetic standpoint…
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- ReferenceSeptember 18, 2026 · 7 min read
Tesamorelin monograph
This is a niche drug, not a magic lean-mass compound. The real clinical use is HIV-associated lipodystrophy, where it can reduce visceral fat; that is a very different goal from “getting jacked.” In…
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- From JustinSeptember 18, 2026 · 6 min read
TB-500 monograph
TB-500 is often paired with BPC-157 as the ultimate "injury recovery" stack. The real evidence base is preclinical thymosin beta-4 biology plus a lot of gym folklore, so confidence in dosing…
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- ReferenceSeptember 18, 2026 · 8 min read
Thymosin beta-4 monograph
TB-4 is not a magic recovery peptide; most of the enthusiasm comes from animal data, wound-healing research, and online anecdote, not solid human performance trials. If someone is chasing better…
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- From JustinSeptember 15, 2026 · 11 min read
Semaglutide monograph
Semaglutide is a GLP-1 receptor agonist — the single-pathway version that retatrutide builds on. It's FDA-approved for diabetes and obesity, so it has a longer clinical track record than retatrutide…
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- From JustinSeptember 15, 2026 · 9 min read
Retatrutide monograph
Retatrutide is a GLP-1/GIP/glucagon triple agonist -- basically a more powerful version of semaglutide that hits three different receptor pathways instead of just one. It's investigational, not…
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- From Justin's archiveSeptember 10, 2026 · 7 min read
Peak Week Is Not a Rescue
Peak week will not save an out-of-shape physique. If you need the final week to invent conditioning, you were not ready to peak — and there's no magic potion to fix body fat in the final week.
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- From JustinSeptember 8, 2026 · 2 min read
Fat Burners After the Show
After the show is over, and after the diet has ended, there is still work to do. Whether you use the post diet period for a rebound growth phase or for a gradual reverse diet, you’re going to have to…
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- From Justin's archiveSeptember 5, 2026 · 18 min read
Training Programming, Volume & Progression — Justin's YouTube Teaching, Part 5
A good example of that is sarcoplasmic growth. You can go look back at the Wikipedia logs from 8, 9 years ago. It wasn't until maybe 2018 or something when we did a Muscle Mentor video on it last time I was down here…
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- From JustinSeptember 5, 2026 · 7 min read
Sermorelin monograph
Sermorelin is a short-acting GHRH fragment that pushes your pituitary to release your own growth hormone. The theory is real; the bodybuilding benefit is probably less than you’ll want. For overall…
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- From JustinSeptember 4, 2026 · 7 min read
Semax monograph
Semax is an experimental intranasal nootropic peptide — interesting stroke/cognition signals, thin high-quality human data, and not FDA-approved. It is not a proven strength, hypertrophy, or fat-loss…
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- From JustinSeptember 4, 2026 · 6 min read
Selank monograph
Selank is an experimental anxiolytic/nootropic peptide — mostly studied for anxiety and stress, not directly for muscle or fat loss. Human data are thin, dosing is not standardized, and it is not…
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- ReferenceSeptember 4, 2026 · 6 min read
Bremelanotide monograph
This is not a muscle-building or performance compound; it is a sex-drive drug with a narrow approved use. If somebody is chasing a dramatic libido fix, the hype is usually bigger than the real-world…
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- From JustinSeptember 4, 2026 · 3 min read
Myostatin inhibitors (general class) monograph
Myostatin inhibitors are extremely interesting on paper — myostatin is a brake on muscle growth — but the human data has been underwhelming. You can get lean-mass increases without matching strength…
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- From JustinSeptember 3, 2026 · 6 min read
MOTS-c monograph
MOTS-c is a short mitochondrial-derived peptide — encoded in the mitochondrial 12S rRNA region — that your body naturally produces, and the research suggests it helps with metabolic regulation through…
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- From JustinSeptember 3, 2026 · 7 min read
Ibutamoren monograph
MK-677 (ibutamoren) is an oral ghrelin-receptor agonist. It makes the pituitary push more pulsatile GH, which raises IGF-1 downstream. It is not injected GH and it is not a direct GH-receptor drug…
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- From JustinSeptember 3, 2026 · 8 min read
Melanotan II monograph
Melanotan II is a synthetic melanocortin receptor agonist, a truncated cyclic analog of α-MSH. It darkens skin by driving melanogenesis, which is why bodybuilders use it for contest color. It is not a…
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- From JustinSeptember 3, 2026 · 5 min read
LL-37 monograph
LL-37 is an antimicrobial peptide — part of your body's innate immune system. It's the active 37-amino-acid fragment cleaved from a larger precursor protein called hCAP-18. It punches holes in…
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- From JustinSeptember 3, 2026 · 7 min read
Liraglutide monograph
Liraglutide is a solid appetite suppression tool, but it's not magic. It's a GLP-1 receptor agonist that slows gastric emptying and reduces hunger signals — basically makes it easier to stick to a…
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- From JustinSeptember 3, 2026 · 6 min read
Kisspeptin-10 monograph
Kisspeptin-10 is a synthetic peptide that acts on the KISS1 receptor in your hypothalamus. Think of it as a direct signal to your brain's hormone control center — it tells your GnRH neurons to fire…
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- From JustinSeptember 1, 2026 · 7 min read
Ipamorelin monograph
Ipamorelin is not a magic mass-builder; it is a weak-to-moderate GH secretagogue without the level of effectiveness of GH. If someone’s already sleeping badly, overdieting, or ignoring the basics…
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- From JustinAugust 31, 2026 · 7 min read
IGF-1 LR3 monograph
IGF-1 LR3 is a niche drug with more hope and hype than hard human evidence could ever account for. The pharmacokinetics of IGF-1 LR3 are very interesting, but the real-world results just never panned…
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- ReferenceAugust 29, 2026 · 7 min read
HGH Fragment 176-191 monograph
This is a niche cutting peptide, not a magic fat-loss drug. The hype runs way ahead of the data: human evidence is thin, dosing is mostly anecdotal, and the product quality problem is real because a…
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- From JustinAugust 29, 2026 · 8 min read
Hexarelin monograph
Hexarelin is for people chasing that GH magic -- unfortunately it doesn't come with magic muscle gains. The endocrine effect is real; the physique payoff is much less certain and usually overstated…
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- From JustinAugust 29, 2026 · 8 min read
Gonadorelin monograph
This is not a magic testosterone booster. In the real world, gonadorelin is mostly a diagnostic hormone, not a proven muscle-building tool. If someone is hypogonadal, the first question is why the…
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- From JustinAugust 29, 2026 · 7 min read
GHRP-6 monograph
GHRP-6 is mostly an appetite tool plus a short GH pulse tool. If you want a reliable mass-gain drug on the level of GH, this is not it; the real-world upside is modest and the evidence base is thin…
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- From JustinAugust 28, 2026 · 6 min read
GHRP-2 monograph
Real GH is always going to be better than a secretagogue, but if one real GH isn't an option, GHRP-2 can add value. GHRP-2 is a ghrelin-receptor pulse — it makes your pituitary dump GH, but it is…
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- From JustinAugust 20, 2026 · 7 min read
GHK-Cu monograph
This is an interesting compound, but lacking solid human performance data. It's real benefit is cosmetic and tissue-repair biology, mostly topical, with a lot of preclinical hype and very little human…
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- From JustinAugust 20, 2026 · 7 min read
Follistatin-344 monograph
This is not a legit bodybuilding staple; it is a speculative research biologic with a lot more hype than hard human data. If someone is selling Follistatin-344 as a reliable muscle-builder with a…
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- From JustinAugust 20, 2026 · 8 min read
Follistatin-315 monograph
Despite massive excitement at early research, this never really panned out as a bodybuilding tool; it is mostly a research biology story with a lot of hype layered on top. If someone is chasing a…
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- From JustinAugust 19, 2026 · 8 min read
Exenatide monograph
This is a diabetes drug that got pulled into the weight-loss conversation because it suppresses appetite and slows gastric emptying, not because it builds muscle. For bodybuilding, the hype is mostly…
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- From JustinAugust 19, 2026 · 6 min read
Epitalon (Epithalon) monograph
This is not a mainstream bodybuilding compound with solid human data. The best case is a speculative sleep/recovery/longevity aid; the worst case is you inject an unregulated peptide with unknown…
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- From JustinAugust 19, 2026 · 7 min read
CJC-1295 monograph
This is not a magic lean-mass drug; it is an investigational GH-axis manipulator with weak real-world evidence in healthy lifters. The DAC version is the only one with a decent human PK story, and…
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- ReferenceAugust 15, 2026 · 9 min read
CJC-1295 + Ipamorelin monograph
This is a peptide combo for people chasing GH-style effects without using actual growth hormone. The hype is bigger than the data: you get some plausible physiology, but not strong proof of meaningful…
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- From JustinAugust 15, 2026 · 6 min read
Cardarine (GW-501516) monograph
This product showed promise in research. The hype is endurance and fat-oxidation, with added side benefit of cholesterol improvement -- but the long-term risk picture is too unknown given the…
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- From JustinAugust 15, 2026 · 7 min read
Cagrilintide monograph
This is an obesity drug candidate, not a physique hack with a clean evidence base. If someone is chasing appetite control and meaningful fat loss, the clinical obesity trials show promise, mostly in…
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- From JustinAugust 13, 2026 · 7 min read
AOD-9604 monograph
AOD-9604 is mostly a fat-loss story, not a muscle-building one. The human evidence is weak enough that I would not sell it as a reliable cutter, especially when the dose, half-life, and real-world…
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- From JustinAugust 13, 2026 · 4 min read
Adding Carbs Back After a Long Diet
When you've been in a calorie deficit for a long time — months of eating less to lose fat — the first thing to add back isn't fat. It's carbs. The reason is hormonal. Carbs talk to your body in a way…
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- ReferenceAugust 13, 2026 · 1 min read
Motivational Interviewing (MI) in Weight Management
Motivational interviewing is a counseling style that emphasizes the client's own reasons for change — asking open questions, reflecting, rolling with resistance rather than confronting. It's widely…
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- From JustinAugust 11, 2026 · 1 min read
Habit Formation
Behavior change for weight loss and health is less about willpower and more about designing the environment and the schedule so the right choice is the default. Structured behavioral lifestyle…
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- ReferenceAugust 11, 2026 · 2 min read
The Science of Anabolic Steroid Abuse (Auchus)
Academic endocrinology lecture by Dr. Richard J. Auchus (UT Southwestern, Division of Endocrinology & Metabolism) on the science of anabolic-androgenic steroids (AAS). An external clinical/scientific…
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- From JustinAugust 11, 2026 · 4 min read
Why Your Body Fights Back When You Diet (Adaptive Thermogenesis and NEAT)
If you've ever dieted hard for a while and felt like the scale just stopped moving even though you were doing everything right, this is why. Your body doesn't just burn fat at a steady, predictable…
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