Question: What do you do after eating?

Today, after eating lunch, a question pop-ed in my mind: "What are yo allowed to do after eating?". I have thought abut it 10 minutes and I came up with some restrictions. These aren't invented by me. I have read about them or heard from friends. Maybe they are only urban legends.

1. Don't drink water! Rationale behind this fact is that water will stick the eaten fat to your bowel and you don't want that! It is like trying to was the fat dished only with cold water. Simply disgusting.  don't want that happening in my body.
2. Don't drink at all! Fluids will dissolve gastric acid and food will be harder to digest or won't get digested at all. 
3. Don't eat fruits. Eating fruits is allowed only after 30 minutes. By eating fruits you distract your stomach's attention from digesting the food and will start digesting the fruits.
4. Don't brush your teeth! You will destroy your enamel. But if you don't brush you will get yellow stained teeth. Especially after eating spinach, ketchup and other extremely colored foods.
5. Don't lay down! You will get fat! Buuuuuut.... the next number says:
6. Don't do any exercises, you will get sick!

I am disoriented. What am I allowed to do after eating? May I do something at all? 

My question is: What do you do after eating? I am curious :-)