OK, JOJO IS RIGHT! My spin instructor showed me a dozen or so exercises to do with one of those big fitballs last night after class. I must publicly let everyone know how much those work. Especially some of the ab ones! We attracted a crowd of other people interested in what we were doing. If I was a personal trainer I could have like 10 clients right there because everyone was asking us questions and carrying on.
Fitball=good
Fitball=good