43:36

Ben Greenfield discusses his biohacking routine with actor Luke Cook, covering his cyclic ketogenic diet, fasted morning cardio with cold exposure, 18-20k daily steps, and data-driven approach using blood work and metabolomics. He favors low-intensity movement over extreme intervals and maintains strict daily boundaries: up at 4:35am, 6-6.5 hours sleep, 4-5k calories daily.

Questions this video answers

Around 4:35am.

About 18,000–20,000 steps.

Approximately 4,000–5,000 calories per day.

About six to six and a half hours.

7:00am morning huddle and 7:00pm family dinner; plus a 2:00–3:00pm no-schedule recharge slot.

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