Axthelm says he has log books from his workouts going back seven years .
Axthelm downloads data such as miles ridden , average heart rate and calories burned into the computer behind him , so he can compare to past workouts .
Axthelm says Axthelm has log books from Axthelm 's workouts going back seven years .
Axthelm downloads data such as miles ridden , average heart rate and calories burned into the computer behind him , so he can compare to past workouts .