Every Saturday I try and get out to do a 2-mile race with a bunch of guys, this morning being no different. It struck me on my morning run how probably the most significant factor in how well you do is how good you're feeling inside, whether you're busy complaining and thinking of all the reasons why you might be slowing down, or being happy and grateful for just being there. Much has been said of stretching, warmups, diet and all the rest of it, but for me this is definitely the biggest factor.