During the season, it's a lot of maintaining your fitness, so in the winter time is when the main work is done. During the season, I just try to maintain my speed with different types of drills with my trainer. I also work on some muscles. If there's ever any injuries during races, then I'll focus a lot of my time on the muscle recovery.
From a scientist's perspective, to understand everything that you need to know about human beings, you only have to tinker with all the mechanical parts of genes and the brain until there are no more secrets left.