17. It's good manners to be the first to stop eating; stuffing yourself is offensive.
18. If there are many people present, don't try to be the first to be served.
19. A little bit is plenty for anyone with good manners. Besides, you won't be short of breath when you go to bed.
20. People who eat too much get stomach-ache and cannot sleep. If you don't overeat, you can get a good night's sleep and wake up early the next morning feeling fine.