The Protein Playbook: Your Complete Protein System for Building Muscle After 40

Your post-workout shake is one meal. Your muscles need four triggers per day. Here’s the complete system for turning every meal into a muscle-building opportunity.

The Bottom Line Up Front

• Aim for 30-40g protein at every meal to guarantee you hit the leucine threshold that triggers muscle building

• Space protein meals 4 hours apart—constant amino acid elevation doesn’t build more muscle

• Fix breakfast first—it’s the highest-leverage change most dads miss

• Add a fourth protein feeding: post-workout shake or pre-bed protein

Before We Get Started

• If you are a Rebuilder (paid subscriber), make sure to check out the Start on Sunday series to unlock my paint-by-numbers simple system for taking your results as a Rebuilder to the next level (and never coming back).

How to Trigger Muscle Growth at Every Meal

You read last week’s article on the 30-90 Protocol. Maybe you even bought a tub of whey protein and started using it after your workouts.

Good. That’s one meal handled.

But here’s the thing most guys miss: your post-workout window is just one of four daily opportunities to trigger muscle growth. Miss the other three and you’re leaving gains on the table—gains that matter more now than they did in your twenties because your body has become less efficient at building muscle.

This week, I’m giving you the complete system. Not just post-workout. The whole day. How to structure your protein intake so every meal counts.

The Switch and the Bricks

Before we get tactical, you need to understand what’s actually happening when you eat protein. Because once you see this, the whole strategy clicks into place.

Think of muscle building like assembling Legos. There are two things you need: the instructions and the bricks.