Harvard T.H. Chan School of Public Health, The Nutrition Source
Physical hunger is your body's biological demand for energy. It builds gradually, is not tied to a specific craving, and comes with physical signs such as a growling stomach, low energy, or lightheadedness that ease once you've eaten enough.
- Comes slow: Builds up step by step over time.
- Any food works: Can be satisfied by almost any type of food.
- Body signs: Shows up with a growling stomach, low energy, or shaking.
- Stops when full: Goes away once the body has enough food.
- No guilt: Leaves you feeling content and energized, not regretful.