I'd like to post this video featuring my grandmother. She has been faithfully attending a wellness center that caters to her needs as an 87 year old woman. This past summer, when we were visiting her, she made it a point to take me down to her center and show me what she's been working on. She LOVES it there! You should have seen her throw a weighted ball against a trampoline and catch it over and over again! The people at the center have been so impressed with her, they decided to use her in a promotional video.
Anyways, the moral of the story is...forget about "getting skinny", the most important thing is being healthy and maintaining good health for a lifetime. My grandmother tells me all the time she is so grateful that she is still able to do the things she needs and wants to do (garden, take care of her home, travel, etc.), but she has really worked hard to remain so fit.
I hope you enjoy and feel inspired! Of course, I'm a little biased, but I think she's a perfect example of how exercise and being healthy improves quality of life at any age.