Terri - I so can't wait!
I'm 54 soon to be 55 years old. Back in the day (high school) I was the Captain of 2 teams (basketball and baseball-the British version,) and also a gymnast where I could do things with my limbs - you have no idea! As I've aged, it bothers me that I am not able to be as flexible (in the joints) as I once was.
I now know what my mum was complaining about when she said her hands/hips and joints hurt when I was a young woman. I got there! I hope you have something in there for the 50+ people!
And...today I'm writing as we speak, if I can stop reading posts on BOL! LOL
Good luck with the book!