09/30/2026
The cold plunge got all the attention this year. The heat has the better vascular file, and almost nobody in your feed is going to say so.
They are not two versions of the same tool. Cold water sends blood away from the skin to protect your core temperature — vessels constrict. That makes cold a real mood and alertness tool, and a poor dilation tool.
Heat runs the opposite assignment. Your body has to push blood out to the skin to dump temperature, so you get volume moving, vessels opening, and an elevated heart rate for twenty minutes without one joint taking a load.
And the research holds up better than most men assume. Men carrying at least one coronary risk factor improved flow-mediated dilation — the standard measure of how well the vessel lining opens on demand — after two weeks of repeated dry-heat sessions. Longer heat protocols have been associated with better arterial compliance and lower blood pressure. Regular sauna use in the big Finnish cohorts is associated with lower cardiovascular and all-cause mortality.
That lining is the same tissue every er****on depends on. Er****ons are vascular, not age-based.
Now the honest part, because heat is a genuine cardiovascular load: this is not a competition, nobody is impressed, and dehydration is the real risk. Fifteen to twenty minutes, two to four times a week, at a temperature you can hold a conversation in. Water before and after. Never with alcohol. Lower bench, and leave early on any day you feel off. And if you have heart disease, uncontrolled blood pressure, or you take anything affecting your blood pressure or your ability to sweat, your doctor signs off first.
Question for the room: have you ever had anyone explain the difference between cold and heat to you in terms of what it does to a blood vessel — or was it just sold to you as "recovery"?
Free blood-flow starting guide: https://to.prostategod.com/ed-lead-magnet-88
Educational only. Not medical advice, and nothing here is meant to diagnose or treat anything.
