My supplement stack, in order of importance.

Supplement #1: 8 hours of unconsciousness. Every night. Same time. It does more than anything I’ve ever been pitched at a conference.

Supplement #2: Walking outside with a 4-legged, 60-pound accountability partner. She has no idea what metabolic health is. She has never missed a session.

Supplement #3: Exposed skin pointed at the sky. Duration: 10 to 15 minutes. Complexity: zero. I just stand there.

Supplement #4: Water. Room temperature. Nothing added. I drink it and then I drink more of it. That’s the protocol.

Supplement #5: Food with ingredients I can identify without a chemistry degree.

Supplement #6: Three minutes of deliberate breathing. I look like I’m malfunctioning. My blood pressure doesn’t care how I look.

Supplement #7: Sitting across from another person and having a conversation. No screen between us. This is the one most people are deficient in.

Total cost: negligible.

Evidence base: decades.

Number of people who will try to sell you this stack: zero. There’s no margin in it.