Remember standing and delivering 7 hours of lecturing is far less demanding than doing 7hrs of physically demanding training. Assume he looses at least one month of decent training, and this leaves him with 4 months of training time, and a body that has deteriorated beyond where it would have been starting 5 months ago.
Then he goes and pushes hard to make up lost time, being a little older he does not recover as well and then the quality of training suffers again. And his body more so, and injuries occur.
Did you note how he struggled with his one leg and how this effected his movement.
