I dont think alot of kids realize that to ski you actually need to be fairly fit and have alot of core strength. Basically twisting and high impact is the cause of bad back's. And thats about all we do in skiing. Right now it hurts to stand and walk for me on account of my back. I just wanted to give those who dont consider excerciseing important a heads up aso they dont make the mistakes i made. If your back hurts even remotely look into doing some excercise's and stretching and get it back to normal quick or your in for a rough year.