The document lists seven things not to do after a meal for optimal digestion. These include smoking, which is as bad as smoking ten cigarettes; eating fruits immediately, which can bloat the stomach; drinking tea, as it contains acids that can harden proteins; loosening one's belt, which can cause intestinal problems; bathing, as it decreases blood flow to the digestive system; walking immediately, as it interferes with nutrient absorption; and sleeping right after eating, as food won't digest properly and can cause gastrointestinal issues. The document encourages sharing the information with others to increase awareness.