Feeling small? How about smaller? That may be because, if you’re over 40, you are smaller than you used to be, and you’re going to get even smaller, just wait. As Eric Nagourney reports in the New York Times, starting at about age 40, people lose about four-tenths of an inch of height every decade. Why? The short answer is gravity. The longer answer, Nagourney explains, is that as we age the disks between the vertebrae of the spine dry out and become thinner. What do to? Buy shorter pants. Some people believe that exercise, particularly yoga, which stretches our backs, can help maintain our former heights. Read more in the New York Times.