Beef liver · heme iron · B12
More oxygen in the muscle means your sets stop ending early.

Working muscle runs on oxygen. Oxygen rides on red blood cells, and those are built from heme iron and B12, both packed into grass-fed liver, in the form your body absorbs best.
Run short and you fail three reps early, every set, every session. Fix it and the volume goes up without changing a thing in your program.
- Heme iron + B12 → more red blood cells
- More oxygen → more reps before failure
- More reps → more weekly volume
- More volume → the growth stimulus you've been missing






