Many of you love exercising with yoga balls. Of course, they are quite useful too. However, like any other sports ball filled with air, these balls deflate at a point. Therefore, you need to keep a ball pump handy here too. With a ball pump, you can quickly balloon pump any ball. That includes the aerobic ball, birthing ball, core stability ball and other fitness balls. To inflate, put the ball on the desktop first. Then pull the handle of the pump up and down. You could also inject a small amount of lubricating oil to keep the action smooth.