If you’re a runner AND a shopaholic, I have good news: You have a legitimate reason to buy more running shoes! Because runners who rotate between two or more pairs of shoes lower their risk of injury by nearly 40%! That’s according to the Journal of Medicine and Science in Sports. The reason? Because different shoes create different impact points when our feet hit the ground, which reduces the repetitive stress on our joints. So if you’ve been dying for a cute pair of hot pink Nikes AND Adidas, you have a great excuse to buy them.