FuelPath: The 4-Phase Metabolic System | Year-Round Nutrition System | Black Iron Athletics
Black Iron Athletics
FuelPath nutrition system
Year-Round Nutrition System

Fuel your training all year, one phase at a time.

FuelPath aligns your eating with four intentional phases, so your metabolism stays healthy and your progress compounds. It now lives at fuelpath.app.

Go to FuelPath Free Macro Calculator

Already a member? Your login is the same. Log in at fuelpath.app.

The four phases

A full year of nutrition, built as a repeating cycle. You always know what this phase is for.

1. Fuel

Eat enough. Build the base: calories, protein, habits, and capacity.

2. Cut

Strip body fat while you hold strength. A controlled deficit.

3. Maintain

Lock in your new composition. Learn to hold it.

4. Build

Add muscle with a controlled surplus. The winter block.

Ready to start?

Get your macros for every phase, track weight and food, and check in each week. Founding member rate is $99 per year.

Start on fuelpath.app

Structure and function support for hard training. Not intended to diagnose, treat, cure, or prevent any disease.