Jason Grubb FitnessNutrition Tool

Get your starting nutrition targets

Coaching-specific calorie, protein, hydration, and meal-split targets for active adults and Masters athletes.

Fast, practical, and built to give you a solid starting point before you start making adjustments.

Start the Calculator

Built for athletes over 40, not random internet macros.

What you get

Calories

A realistic starting intake based on your profile and goal.

Protein

Anchored to target body weight so the recommendation stays usable.

Hydration + meal split

Enough structure to execute well without turning food into a side hustle.

JGFNutrition Tool

Performance fuel for Masters athletes

This is a starting-point tool, not fake precision. We’ll give you useful numbers to run for 14 to 21 days, then adjust from real trend data.

Step 1

Get your starting targets

You’ll get daily calories, protein, hydration, and a practical meal split based on your goal and training load.

Useful in under 2 minutes
Built for active adults over 40
No gate before the value