56 yo, cycling 2 years, no previous exercise or fitness background except basic training in the Army, 37 years ago. I began crit racing this January and am doing better than I had expected but I often wonder what, if any improvement may be possible at my age. I have heard it takes more than just a couple of years to reach one's max potential but am I fighting a losing battle against the clock? I train 9 - 12 hours per week and take care to get enough rest and avoid overtraining. Any tips are appreciated.