Podbit · Mind Pump: Raw Fitness Truth
Cold plunges vasoconstrict blood vessels and suppress the nervous system for up to 24 hours — which means an athlete doing a cold plunge the day before a game may actually perform worse. Kula isn't anti-cold plunge entirely, but he's adamant they have no business being used close to competition.
Where this was said
At 44:56 · chapter starts 43:14
The recovery technology discussion opens with Kula establishing his non-negotiable foundation: sleep and nutrition come first, everything else is enhancement. From there, he introduces the audience to Air Therapeutics and their CO2 delivery system — a paste applied directly to targeted areas and a full-body suit that replaces oxygen with CO2 for systemic effects. [1] — Brian Kula "Hyperbaric chambers push more oxygen into the body but vasoconstrict, limiting blood flow. CO2 paste does the opposite — it vasodilates and…" 40:54 The mechanism is the Bohr effect: elevated CO2 causes hemoglobin to release oxygen more readily into surrounding tissue, driving improved cellular repair without the need for pressurized environments. Kula contrasts this directly with hyperbaric chambers, which vasoconstrict while pushing in more oxygen — a combination he argues is less effective because more oxygen is only useful if it can be delivered efficiently. He gives personal testimonials (his wife's shoulder recovered in two days, his elbow tendinitis clears reliably) and says he now recommends the paste on hamstrings before max velocity days as a pre-workout enhancement. The conversation then pivots to cold plunges, where Kula takes a notably strong stance: he considers them counterproductive not just for muscle building (where the bodybuilding world has already pushed back) but for neural performance. [2] — Brian Kula "Cold plunges vasoconstrict blood vessels and suppress the nervous system for up to 24 hours — which means an athlete doing a cold plunge th…" 44:56 Cold suppresses the nervous system for up to 24 hours, meaning an athlete who cold-plunges the Friday before a Saturday meet may have a sluggish CNS during competition. He's not anti-cold-plunge entirely — early in the week is fine — but he banned them as pre-competition recovery at his facility once he understood the neural suppression effect. He connects this to the broader theme of the episode: everything Kula recommends is ultimately about optimizing nervous system function and oxygen delivery, because those two systems determine athletic output.
Cold plunges can shut down the nervous system for up to 24 hours, potentially hurting athletic performance if done the day before a game.
ETS Performance, the company that acquired Kula Sports Performance, operates over 80 corporately-owned locations and is targeting becoming the world's largest performance company.
Multi-sport development is ideal through childhood, but Kula acknowledges the real-world pressure of specialization by high school. His pragmatic advice: stay multi-sport through at least freshman year to avoid overuse injuries and build diverse movement patterns, then commit — because in precision sports like baseball, you can't catch up by jumping in late.
Spike your cortisol in the first 1–3 hours of your day — with sunlight, hydration, exercise, or caffeine — and you set up elevated mood, focus, and stress resilience for the rest of the day. Miss that spike and you get a flat cortisol curve: brain fog, poor learning, and bad sleep. The bookend is equally important: dim lights, no caffeine, and wind down the final hour.
Bottom-up impulses — just eat the cookie, keep scrolling — are driven by deep brain structures. Top-down prefrontal control is the thing that lets you wait, learn, and grow. Every small act of choosing the harder thing, from picking up trash to doing the workout you dread, greases that top-down circuit — and it transfers to everything else.
A Washington University in St. Louis study found that the attention-improvement effects of Ritalin are effectively equal to a great night's sleep. Stimulants also stunt growth and reduce sleep quality. The new direction is combining lower medication doses with genuinely better sleep — not replacing sleep with pharmacology.
Two big inhales through the nose, then a full exhale to empty — that's the physiological sigh. It fires a specific vagal pathway to slow your heart rate, offload CO2, and tip the autonomic nervous system toward calm instantly. Doing just 10 deliberate exhales throughout the day measurably elevates HRV by nighttime.
Presence isn't a state you fall into — it's something you actively produce by anchoring perception to the immediate environment. Ask 2–3 trivially specific questions about your surroundings (how many cans, what does it smell like) to pull your brain out of past/future mode. Then deliberately choose what to think or say next. That's it.
Acknowledge the thing, feel all of it, uncouple the emotion from the memory, then transmute the experience into something meaningful. Most people stall at step 2 — feeling the feelings — and never reach uncoupling. An entire generation is stuck there, confusing emotional processing for healing. Moving through all four is the actual path out.
Nicotine creates a uniquely alert-and-calm state ideal for learning — but only at low doses used occasionally. If you're using 3–6 mg pouches multiple times a day, you're not getting a cognitive enhancement, you're just rescuing yourself from withdrawal. For a genuine performance effect, use it once or twice per week at most.
Two injections of BPC-157 (100–200 mcg) eliminated shoulder pain Huberman couldn't shift for months. The peptide pinealon gave him 2.5–3 hours of REM sleep inside 6 hours — an effect that persisted into subsequent nights and scaled down to just once per week. Neither is in the book because the human data aren't there yet, but the animal evidence is strong.
Long, slow cardio builds capillary networks and mitochondrial richness; high-intensity intervals push VO2 max. You don't need huge volumes of either. Huberman's protocol: one 45–60 minute long slow session, one near-maximal effort HIIT session (Airdyne 20-on/10-off for 6–8 rounds), and one medium 30-minute effort per week. That's the complete cardio picture.
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