Peter Attia used to do prolonged water fasts (7–10 days quarterly, or 3 days monthly) and has stopped: he no longer travels, saw no biomarker showing benefit, and said it cost him about 20 pounds of muscle over six years (The Drive #276, Oct 2023).
Tim Ferriss described a time-restricted eating pattern with an eight-hour target window, generally 2 p.m. to 10 p.m. and often compressed to roughly 2–3 p.m. through 9 p.m., with two larger meals plus one or two whey shakes. He stated no weight-loss goal; this captures his timing only.
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16:8 intermittent fastingdaily eating window in the September 2025 snapshot · Schedule detailsDetails
daily eating window in the September 2025 snapshot · generally 2–10 p.m.; often compressed to roughly 2–3 p.m. through 9 p.m.
Bryan reports a calorie-controlled eating pattern with stated energy and macronutrient targets.
About this protocol
Bryan reports a calorie-controlled eating pattern with stated energy and macronutrient targets. His final-meal timing and its connection to heart rate before bed are now included in his Sleep routine.