Ben Greenfield's Pre-Workout Stack

4 Sept 2025 · 1 min
1:11

Ben Greenfield does fasted workouts with a small pre-workout fuel: about 10 grams of amino acids plus ketone supplements. Ketone esters taste bad, but some formulations are better. When traveling internationally, he eats before training to reset his circadian rhythm.

Questions this video answers

About 10 grams ("a couple scoops of amino acids. This is like 10 grams of amino acids.")

One bottle is 12 servings.

He drinks half a bottle.

14, 15, sometimes 16 hours since his last meal.

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