Before calcium ever collects in an artery, something upstream went wrong.

Class two of Heart Mastery wasn't really about blood flow. It was about treating arteries as organs — the nitric oxide system that keeps them open, and the MTHFR gene sitting upstream of it. He told students to ask their doctor to check their homocysteine.

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A: He answered with a question back: have you ever broken a bone, and what heals it? Calcium. That's the mechanism — calcium follows injury. Roll an ankle enough times and it collects in the joint. That's a bone spur.

So a nodule isn't automatically sinister; plenty are benign. What matters is what the location tells you. Calcium in the arteries coming off the heart has a name — atherosclerosis — and that stiffening drives pressure up and raises stroke risk. Whatever called the calcium over is the real story.

Then the part I've repeated to my whole family. Asked for the one supplement everyone should take, he didn't hesitate — vitamin D3, never without K2, because K2 helps direct calcium into bone instead of arteries. He also told the class to ask their doctor about a coronary calcium score.

That answer was class one. There are five more.

Six classes: the heart as a pump, circulation and the nitric oxide system, nutrition and supplements, stress, movement and rest, and the long-term plan. Just under ten hours, recorded live.

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A: He didn't hedge. He described what he'd read about farmed operations — fish swimming in their own filth, a large share dying before they ever ship — then put it back to the class: would you pay a few dollars more?

Then he took it to the supplement shelf, which is where it got practical for me. If the fish was farmed, the oil came from a farmed fish. Read the label and look for wild-caught sourcing — Norwegian and Alaskan, mackerel and sardines.

Same logic on chicken and eggs: he wants birds that roam. Not sentiment — an unhealthy animal doesn't make healthy food. It loops back to class one, where he explained how industrial oils inflame the arteries as they travel the bloodstream. Sourcing is upstream of everything else he taught.

Changing what you buy is step one. Knowing whether it's working is step two.

He mentioned in class that when someone comes to him about their heart, he isn't ordering one cholesterol panel — there are around twenty markers he'll look at.

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A: Heart rate variability is the spacing between beats, and he treats it as one of the most honest numbers you can look at — a rhythm that flexes suggests a nervous system handling load, a flat one a body stuck in gear. His answer began with the unglamorous part: breath work. In through the nose, past the chest, into the belly. Four in, four hold, four out, four times — scheduled, not improvised. Plus dry sauna. The one thing he hadn't mentioned that night: flotation tanks.

Then the story that quieted the room. He'd read a client's wearable and kept seeing atrial fibrillation in a man who felt completely fine. He ran it again, same result, and sent him to a cardiologist who confirmed it. His point wasn't that a wearable diagnoses anyone — it's that most people carry a record of their physiology and never read it.

The number isn't a verdict, it's feedback. He's blunt that genetics aren't a sentence, and the lever most people never pull is the nervous system. You can't out-supplement a body that never leaves fight-or-flight.

You can't work on a number you never look at.

Those wearable stories weren't about gadgets. They were about a continuous record instead of one reading a year — heart rate variability, resting heart rate, recovery, sleep.

Hume Health is on Nurse Doza's recommendations list for exactly that.

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