What did @patricklyons actually say?
Patrick claims a study found that chopping wood with an axe raised testosterone levels by about 50%, then correctly walks it back: the increase was acute, meaning measured immediately after the activity, and therefore not meaningful for long-term hormone optimization. He is essentially fact-checking himself in real time, which is a reasonable thing to do.
The core message is sound. He is pointing out that a dramatic-sounding statistic loses most of its practical significance once you understand the study design. Acute hormonal spikes happen after almost any physically or emotionally engaging activity. They do not reflect changes in baseline testosterone, which is what actually matters for health, body composition, and how someone feels day to day.
The transcript is rough, clearly auto-captioned with errors like "his style shell levels," but the intent is clear enough to evaluate. He is not selling a protocol or making therapeutic claims. He is clarifying a viral fitness statistic.
Does the science back this up?
Yes, with some nuance worth adding. The study in question is almost certainly Trumble et al. (2012), published in Evolution and Human Behavior. Researchers studying the Tsimane people of Bolivia found that men who chopped wood for an hour showed roughly a 48% increase in salivary testosterone compared to men who played soccer. The wood-chopping group also outperformed a control group that rested.
This is a real finding, and the 50% figure Patrick cites is accurate within rounding. But there are things the video glosses over. First, this was a specific population, indigenous Bolivian men, and may not generalize broadly. Second, acute testosterone spikes following physical and competitive activity are well-documented across many types of exercise. Resistance training, competitive sports, and even watching your team win produce short-term spikes. Third, the Trumble study was interpreted by the authors as evidence that testosterone responds to ecologically relevant, provisioning-type tasks, not just athletic competition. That is actually interesting on its own terms.
Patrick is right that acute spikes do not translate to long-term testosterone elevation. Studies on chronic exercise confirm that resistance training over months can modestly improve baseline testosterone in some men, but a single session of wood chopping will not move the needle on your labs.
What did they get wrong (or right)?
Mostly right on the core claim. The 50% figure is accurate, the study exists, and the point about acute versus chronic measurement is scientifically legitimate and worth making publicly. A lot of fitness content repeats that statistic without the context, so correcting it is useful.
What is missing is any depth on why the acute response happens at all. Testosterone rises acutely after vigorous physical activity partly due to reduced metabolic clearance from the liver and partly due to sympathetic nervous system activation, according to Kraemer and Ratamess (2005) in Sports Medicine. That mechanism is worth knowing because it explains why the spike is real but transient.
The video also does not distinguish between salivary testosterone, which the Trumble study used, and serum testosterone, which is what clinicians measure. Salivary and serum levels correlate but are not identical. That is a minor but real omission for an audience that may be tracking their own lab results.
There is no misinformation here, and Patrick does not oversell or undersell. He gets credit for adding context rather than just repeating a viral claim.
What should you actually know?
Acute testosterone spikes are physiologically real but clinically irrelevant for most people asking about testosterone optimization. If you are concerned about your testosterone levels, what matters is your baseline fasting morning serum total testosterone, free testosterone, SHBG, and LH, measured on at least two separate occasions, as recommended by the Endocrine Society guidelines (Bhasin et al., 2018, Journal of Clinical Endocrinology and Metabolism).
Activities that genuinely support healthy testosterone over time include consistent resistance training, adequate sleep, managing body fat, and addressing underlying conditions like metabolic syndrome or sleep apnea. Single bouts of physical activity, however vigorous, are not a hormone strategy.
The Trumble study is legitimately interesting from an evolutionary biology standpoint. It suggests that testosterone responds to tasks that historically signaled provisioning ability and competitive effort, not just sport or aggression. But interesting biology does not mean practical advice. Chopping firewood twice a week will not fix hypogonadism.
Bottom line verdict
Patrick earns credit here. He presented a real statistic, named the limitation accurately, and did not use it to sell anything. The science supports his main point. The gaps are minor: no mechanism explained, no distinction between salivary and serum testosterone, and no broader context on the study population. For a short social video, this is more responsible than most testosterone content on the platform.