Ever wonder how 9,000 people are hurt each year while using gym equipment?

Well, it's likely from doing things like this.

While giving away a treadmill on CBS' "The Price is Right" on Thursday, announcer George Gray felt he needed to demonstrate an obvious way to injure yourself on national TV.

We are not sure why he chose to run backwards or even run at all, especially when considering the other prizes just featured someone standing next to them.

It's a short clip, but with a powerful message: Don't run backwards on treadmills.

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