Put the wrong fuel in a car, or not enough of it, and it doesn't matter how good the engine is. It's not going to run right.
Your brain works exactly the same way.
A plant grows steady with water and light. Starve it of either one, and it wilts — no matter how good the soil underneath it is.
This isn't about a strict diet, or a long list of rules. It's simpler than that: your brain runs on what you put into your body.
Two questions. Not a test — just locking in what you just read.
In the car-engine metaphor, what happens with the wrong fuel?
What's the real skill of brain nutrition, according to this lesson?
This is what actually builds your Participant record — separate from the score above, which just resets per browser. One email, logged once per lesson.
Keep stacking reps like this, and something starts adding up. That's not by accident.