And yes, we are doing the jumping pullups on a Smith machine. Why you might ask? A. the girls are short enough to use is, and B. its one of the better uses for a Smith machine. The Smith machine requires ZERO midline stability when using it for squats (one of the many uses), and does not allow one to train a movement that when performed outside of a gym( ie..real life setting), requires one to stabilize themselves while moving through an active ROM. And it's funny, because most of the people I see using the S.M. are usually athletes, mostly basketball players, soccer players etc.. I try my best to enlighten people when I notice their use of the S.M., but sometimes it's just too easy, I guess, for people to stick with what they know. Training certain muscles, and not movements that is. Comments/feedbackQuestions gladly accepted and encouraged.