“Excess in eating leads to laziness in fulfilling obligatory duties such as prayer, as well as other recommended acts. It increases the likelihood of disobedience by instigating desires and reducing self-control. A person is more likely to become angry, for example, after having overindulged. The mind also functions less effectively on a full stomach, and this has been confirmed by scientific research. When the stomach is full, more blood goes to that area to process the food, leaving less blood available for the brain.”