I had a stutter when I was about 7, it only lasted a few weeks though. It came back when I was 15/16. I'm 18 now and it hasn't gone anywhere. It might be a shortness of breath thing. I stopped playing sports when I was about 13, so it could just be a physical condition. Never thought about it that way. Dealing with a stutter is the same for everyone. Either hold your head high and keep your chin up, or stop talking and get easily embarrassed by your stuttering.