Leading the free world comes with a lot of responsibilities, and heavy lies the crown on those that bare them. If you think being commander-in-chief is an easy job, take a peek at photos of presidents before and after their terms. They tend to experience significant changes in their appearances, mainly because the presidency comes with a ton of stress.
In the same way that the Oval Office changes during presidencies, presidents' faces transform over the course of their terms. Obviously, they get older, but presidents also get weighed down by the stress of the job. Not to mention, many presidents had medical conditions that likely aged them, as well. All in all, pictures of presidents at the start and end of their terms highlight the monumental stress US presidents face.