Yesterday in the gym I was doing some lowbar squats with a new gym buddy. In the opposite rack some guy pulls up with one of those largish blue hemispherical balls with the flat black surface on the bottom. I use these for ankle strengthening exercises. He then proceeds to flip it over so the ball is on the bottom and he starts doing squats with just the bar while precariously balancing on this ball. I thought this was silly albeit not too dangerous given only the bar weight. So I do another set, turn around and see this guy squatting with 45 plates on it now! That is still not a lot of weight but he is squatting and doing this balancing act at the same time. I think I felt my own knee ligaments shooting across the room. Isn't this a super bad idea? Isn't the whole point of squats to have a very strong, stable form/foundation to ya know, control the weight. What bad stuff have you seen?