“If you are going to notice every little thing in a situation, and if the situation is complicated (many things to remember), intense (noisy, cluttered, etc.), or goes on too long (a two-hour commute), it seems obvious that you will also have to wear out sooner from having to process so much so thoroughly. Others, not noticing much or any of what you have, will not tire as quickly. They may even think it quite strange that you find it too much to sightsee all day and go to a nightclub that night. They might talk blithely on when you need them to be quiet a moment so that you can have some time just to think, or they might enjoy an “energetic” restaurant or a party when you can hardly bear the noise. Indeed this is often the behavior we and others have noticed most—that HSPs are easily stressed by overstimulation”