Life doesn't give you all the practice races you need.
What does he mean?
So you know the quote "Practice Makes Perfect"? Well if you do Jesse Owens is talking about that to be perfect you have to practice a lot and he is saying that yes you have to practice a lot but you can't live so long. So he's pretty much saying practice, practice and practice but you will not be perfect ( well you can if you live a long life) but thats what the quote means.