What happens to our body after the age of 30?

Although your metabolism may be starting to slow, the good news here is that you actually gain less weight during this decade than when you were younger, reports The Washington Post, taking data from the Centers for Disease Control. As the Post point out, “the average person typically puts on 1 to 2 pounds a year from early adulthood through middle age.” But contrary to what you may have heard, that increase happens mainly in the 20s—not your 30s.