The bathroom is one of the few places in a building in which interrupting someone while they are using the room is a fairly global taboo.
This, in turn, confers some ability to use the bathroom as a retreat, of sorts, to block out whatever is going on outside, and focus as long as needed – though stays in excess of 40 minutes are typically frowned upon at work and home. Unless it’s taco night.
This answer originally appeared on Quora: Why do people find it pleasurable to read in bathrooms?