Other than burpees, box jumps are probably ~the~ most well-known (and most intimidating!) plyometric exercise you can do. If they give you nightmares of scraped shins, I hear you—but I also guarantee ...

For a cardio and lower-body test, throw this box-jump challenge into your training. But before jumping into it, you have two options. If you're short on time and only have 10 or 20 minutes to spare, ...

This boy born without arms refused to quit on the box jump. "Do it now. Jump up on that box now," the trainer yells. "Go!" Tim Bannon, 14, born without arms, gives it a try. He comes up short trying ...