The act of reclining shortly after consuming food can disrupt the normal digestive process. When the body is horizontal, gravity’s assistance in moving food from the stomach to the small intestine is reduced. This can lead to food remaining in the stomach for a longer duration. An example of this effect is the increased incidence of acid reflux when lying down after a large meal.
Remaining upright following a meal allows gravity to aid the transit of food through the digestive tract. This promotes efficient nutrient absorption and can mitigate discomfort. Historically, cultures have emphasized leisurely post-meal activities that involve sitting or gentle movement, recognizing the potential benefits for digestion. Avoiding recumbency immediately after eating is particularly important for individuals with pre-existing conditions such as gastroesophageal reflux disease (GERD) or hiatal hernias.