Feeling hungry after sex is not uncommon, and it can happen for a variety of reasons. Sexual activity can be physically demanding, especially if it lasts for a longer period. It involves the use of energy, muscles, and can elevate your heart rate, which leads to burning calories. Just like any other physical activity, your body may signal hunger afterward as it seeks to replenish energy stores. If you notice that you’re consistently very hungry after sex and it feels excessive, it might be worth checking in with a healthcare provider to rule out any underlying health conditions, such as issues with metabolism or blood sugar regulation.