[https://www.youtube.com/watch?v=7-RRVdEhm_o](YouT...  ...www.youtube.com/watch?v=7-RRVdEhm_o](YouTube Link) Exercise balls are strange inventions. On one hand, if used corr...  ...The problem is, the people who get their hands on exercise balls never seem like they want to do the right thing w...  ...e they wan...