Why Hunger Means You're Building Muscle

21 May 2026 · 1 min

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In this concise video segment, Eric Roberts explains that increased hunger during intense training is not a failure of willpower but a physiological response to the high energy demands of muscle repair and growth. He uses a car‑and‑trailer metaphor, likening the body to a car pulling a heavy trailer up a mountain, to illustrate how building muscle (the trailer) requires substantially more fuel (calories). When workouts become harder and hunger feels insatiable, Roberts frames this as a positive signal that the body needs more "bricks"—nutrients—to construct new muscle tissue, countering the common misconception that overeating is simply a lack of self‑control.

Chapters

You think you have no self-control. You're just going to keep eating. You're going to get fat. This isn't a willpower problem. Think of it like a car towing a trailer up a mountain. If you hook a heavy trailer behind it and you make it go uphill, you're using up so much more fuel. Building muscle is the trailer. Repairing your muscle, growing your muscle, pushing hard in your workouts. Require a massive amount of calories. If you're suddenly feeling hungrier, almost like a bottomless pit, and your workouts are getting harder, pushing yourself more, this is a good thing. You can't build the house you want with no material. Hunger is your body asking for more bricks to build more muscle.