I read about a guy named Clarence E Willard who claimed to be able to change his height by 7 1/2 inches. Apparently this was a sort of demonstration that a few people did a century ago. This article from Wikipedia https://en.wikipedia.org/wiki/Clarence_E._Willard explained the general process without any detail. The ability seems like something many of us would love to have. I remember hearing about this when I was a kid that he could be talking eye to eye with someone and grow to a point of looming over the other person. There is also a video by Ripley's Believe It Or Not from 1930 of him growing and shrinking again. It is impressive but seems to be less than 7 inches. That part starts at 4:27. Does anyone have anymore information about Clarence Willard or the exercises he did to perform this feat? Are there people around today that can do this? I would think there might be some people on here that would want to learn.