The document lists 7 things not to do after a meal: 1) smoke, as it increases cancer risk equivalent to smoking 10 cigarettes; 2) eat fruits immediately as it can cause bloating; 3) drink tea as the acid can harden proteins and hinder digestion; 4) loosen your belt as it can cause intestinal twisting; 5) bathe as it decreases blood flow to the stomach; 6) walk around as it can hinder nutrient absorption; 7) sleep immediately as food won't digest properly and can lead to gastric issues. People should be aware of these recommendations.