Video: US college football star makes 40" box jump holding 70lb dumbbells

Box-jumping is a pretty popular challenge at the gym - it blasts calories, builds strength in your legs and adds a bit of light-hearted competition to your workout.

But the chances are, you won't see someone try a 40" leap while holding a pair of 70lb dumbbells.

That's what Shawn Oakman, star of US college football team the Baylor Bears, does in this video as he makes us feel a little less proud about our box-jumping boasts...

Advertisement