Box jumps (yes, jumping onto a box) are a proven way to boost clubhead speed. Rory McIlroy’s great at them, and look at what he can do to a ball. The traditional box jump—onto a platform set directly ...

Add Yahoo as a preferred source to see more of our stories on Google. Most gyms have plyometric boxes. They're also found in parks with public workout areas. Photo: Getty Images Building body strength ...