PMarinoFit

veteran · White Plains, NY

Fitness director and self-described science enthusiast. Former state-champion competitive bodybuilder, certified health coach and nutrition specialist, long-time contributor to health and fitness publications.

Joined Jul 2026 · 23 posts

Evidence first, ego last.

Recent posts

  • Felt 100% recovered, reinjured within a month, what did I miss?

    You didn't just mask it, but you definitely outran the remodeling phase. BPC-157 upregulates growth factor receptors and promotes rapid angiogenesis, which clears local inflammation and lays down type III collagen quickly. The issue is type III collagen is disorganized and weak compared to type I collagen, which only converts under sustained, high-load mechanical tension over time. When you jump straight from rehab loads into explosive plyometrics and max squats, that immature tissue matrix fails. Next time, don't drop the protocol all at once while jumping straight back into max output. Keep the heavy slow resistance (HSR) protocol going for another 8 to 12 weeks even after you hit zero pain.

    1mo ago

  • When did you decide you were actually ready to go back to your sport, not just pain free?

    That's placebo mate if you think zero pain on a light jog equals tissue readiness. BPC quiets the signal fast, but mechanical load is what aligns the fibers.

    1mo ago

  • Do NAD+ supplements really work?

    I fell down the NMN rabbit hole last year when recovering from a biceps tear. The literature shows it improves vascular elasticity and insulin sensitivity, but it didn't do anything for my rehab speed that kettlebell eccentrics and sleeping 8 hours hadn't already done.

    1mo ago

  • What is Mot C good for?

    Worth noting that WADA has MOTS-c strictly banned under Category S4 as a metabolic modulator. Beyond the legal gray zone of buying 'research chemicals' online, manipulating mitochondrial AMPK pathways can cause real blood sugar drops and systemic fatigue, especially if someone is already taking metabolic or diabetes medications.

    2mo ago

  • Post-op tendon loading timelines and what actually drives recovery

    Same with basic timing. Vitamin C plus gelatin 45 minutes before isometrics spikes glycine right as tendon blood flow peaks. Proven in human trials and costs pennies.

    2mo ago

  • Post-op tendon loading timelines and what actually drives recovery

    You can't supplement your way out of doing the work. Mechanical strain drives collagen mRNA expression and proper fiber alignment. Sit on the couch waiting for a magic fix and you'll just end up with useless, disorganized scar tissue. Stick to your PT protocol.

    2mo ago

  • Is sermorelin like Ozempic?

    I'm hearing this comparison constantly from clients who see local medspas marketing these two compounds in the same breath. People are asking if sermorelin is just the muscle-building version of Ozempic. Mechanistically, they aren't even in the same conversation. One is a GLP-1 agonist designed for appetite suppression and glycemic control, while the other is a 29-amino-acid peptide that prompts the pituitary gland to release native growth hormone in natural pulses. Has anyone else had to unpack this confusion with folks looking for recovery shortcuts?

    2mo ago

  • Is TB-500 safe for bodybuilding?

    BPC pins locally for tendon collagen scaffolding, while TB-500 acts systemically on actin. Neither cycle will compensate for sloppy protein intake, bad sleep, and ignoring progressive loading.

    2mo ago

  • Can glutathione reduce belly fat?

    Short answer: no, glutathione will not melt belly fat. It is the body's master antioxidant, acting as a cellular shield against reactive oxygen species. Studies on metabolic syndrome show that people with higher baseline glutathione lose weight more effectively during a diet program, but that is secondary to improved insulin sensitivity and liver function. Caloric deficit remains mandatory.

    2mo ago

  • Is TB-500 safe for bodybuilding?

    First off, it does not build a single gram of muscle. It isn't anabolic. Bodybuilders take it hoping to speed up muscle strain recovery, but promoting systemic angiogenesis is a double-edged sword if someone has an undiagnosed lesion.

    2mo ago

  • What is the downside of taking NAD+?

    Systemically, the main biochemical concern is methyl depletion. Processing high doses of NAD+ forces the liver to consume methyl donors, which can pull heavily on your folate and B12 reserves over time. If you run injections or heavy precursors without managing methylation, you can end up with unexplained fatigue and mood shifts.

    2mo ago

  • Does glutathione raise testosterone?

    That is accurate, Mike. Think of NAD+ as the engine crank for mitochondrial ATP production, while glutathione acts as the shield clearing the reactive oxygen exhaust. NAD+ metabolism generates NADPH, which the cell uses to recycle spent glutathione. They work together, but neither one burns fat directly or acts as a hormone booster.

    2mo ago

  • Progression rules for loading tendons without triggering flares

    For plyometrics, count ground contacts instead of force. Start with low-amplitude double-leg hops and cap landings at 30 to 40 per session before adding intensity. The key physiological detail people miss is tenocyte response time. Collagen synthesis peaks 36 to 72 hours post-load, but degradation spikes first. Silbernagel and Malliaras have published extensively on this 24-hour curve. Pain up to 3/10 during exercise is acceptable only if stiffness resets by morning. Compounds like BPC-157 do not replace mechanical tension.

    2mo ago

  • Which is better, BPC or TB500?

    Actually, TB-500 tends to be slower-acting. You might feel a slight drop in baseline inflammation in the first week, but cellular migration and angiogenesis peak around weeks two to four, with tissue remodeling happening in weeks four through eight. Also keep in mind that neither BPC nor TB-500 has completed human clinical trials, so evidence remains mostly experimental.

    2mo ago

  • Is GHK-Cu safe to use?

    The distinction between topical and injectable here is massive. The topical literature for collagen synthesis and dermal remodeling goes back decades with solid human trial data. But subcutaneous injection is a completely different story. The FDA removed GHK-Cu from the 503A bulk compounding list precisely due to the lack of safety data on systemic copper accumulation and potential organ stress. Stick to creams if you use it.

    2mo ago