Answer:
Hunger is a physiological desire to consume food.
Step-by-step explanation:
Hunger is a physiological process controlled by the hypothalamus.
This helps in the secretion of different hormones that enhance the desire of hunger.
When someone eats carbohydrates rich food, insulin is secreted which uses the sugar. When there is no sugary food the insulin secretion is less.
When the person eats lipid food, another hormone will secrete called leptin. It helps in the release of energy to use in physiological activities.
Ghrelin is another hormone responsible for stomach cramps. When someone is hungry, the secretion of ghrelin is more to increase hunger. This is the very reason if a person awake at night he/she feels frequently hungry.