If you follow my Instagram page, you have likely seen me throwing a large, yet crude looking medicine ball against a tire. I first demoed the ball a few months ago, and did so again earlier this week. After each video, I received a plethora of questions about how the ball was constructed. I’ve also been asked why I use a tire as a rebounding surface. With that in mind, I will use this entry to examine the heavy medicine ball in more detail.