An exercise ball can be inflated by removing the pin and inserting a pump to inflate the ball until it reaches a desired level of firmness. Discover how more air equals more instability in an exercise ball with help from a Pilates instructor in this free video on inflating exercise balls.
Today I'm going to show you how to properly inflate an exercise ball. The first thing you want to do is locate where the pin is on the ball. Remove the pin by gently lifting it out, then take your palm and put it inside the hole and use the pump to inflate it until it's pretty firm. Remove the pump and quickly put the pin back in. You want to have the ball inflated enough so that if you were to sit the line from your knee to the hip would be parallel to the floor. The more that is inflated the easier that it will be for you to do your exercises properly. The more air that you put in your ball the more instability you will have making the exercises more difficult so if you're looking for an exercise ball that maybe is more difficult you'll want to increase how much air you put in. In order to make those exercises less difficult just remove the pin and take off a little bit of air.