Well, Americans do eat quite a lot more food than most people in the world, and thus they need to relieve bowl movements often. This can be a problem if this causes a queue in your house due to a shortage of toilets. There are a few ways to address this bottleneck. One is to apply scheduling to when individuals eat and carefully study the bowl patterns of each person to adequately predict when a toilet is available, say, in a house of two or more inhabitants. Another method is to increase the available resources and add more toilets.