9:33

Conversation between Shane Idleman and Ben Greenfield about fasting as both a spiritual discipline and a health practice. Shane describes personal experience including a primarily water 40-day fast (with occasional bone broth/juice when preaching), during which he lost 37 pounds (from ~230 lb to ~193 lb). They discuss daily intermittent fasting (12–16 hours) for spiritual focus, quarterly 3–5 day fasting-mimicking retreats, and the balance between feast days (Sundays) and fasting. The discussion blends biblical examples of fasting with modern physiological considerations (autophagy, hormones, muscle preservation).

Questions this video answers

40 days (primarily water, with some bone broth/juice when needed).

37 pounds.

From about 230 lb down to about 193 lb.

Approximately 12–16 hours daily (with caveats for premenopausal women: 10–12 hours).

A 3–5 day caloric-restriction/fasting-mimicking retreat (juice, bone broth, amino acids/ketones, ~40% or less of normal calories) each quarter (spring, summer, fall, winter).

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