glycogen

Definition

The stored form of glucose in muscles and liver, serving as your body's primary fuel tank for high-intensity exercise. The reason why 'carb-loading' is an actual strategy and not just an excuse.

Example Usage

I completely depleted my glycogen stores during that century ride, and now my body is convinced I'm personally attacking it.

Origin

From Greek 'glykys' (sweet) and '-gen' (producing); discovered by French physiologist Claude Bernard in 1857

Fun Fact

Your body can store about 500 grams of glycogen total, enough energy for approximately 90-120 minutes of hard exercise before you hit the wall.

Source: Exercise physiology and sports nutrition textbooks

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