There weren't any astronauts until I was about 10. Yuri Gagarin went into space right around my 10th birthday.
My dad served in two wars has been flying airplanes for 60 years now. He was certainly quite an inspiration.
I think it's going to be a very important, unique data set in terms of measuring the behavior of your lower body in space and trying to figure out what we can do to preserve bone and muscle density.