This is a book/DVD produced by the PTs I work out with three times a week. It's a complete full body workout you can do with no equipment, but with an emphasis on core and balance. It only takes about 20 minutes to do the whole thing. A fit person like yourself will want to do the "pro" modifications--ab-dogs on your elbows for instance. This is my "go-to" work out when I just need to do SOMETHING. A tool in my arsenal, but not the main one.

http://andycore.com/shop/index.php?a...od&productId=4

Karen