Any active sportsman has to be very focused; you've got to be in the right frame of mind. If your energy is diverted in various directions, you do not achieve the results. I need to know when to switch on and switch off: and the rest of the things happen around that. Cricket is in the foreground, the rest is in the background.
I work out a lot, but it changes day to day. I always start out with some cardio - either a jog, a bike ride, or footwork drills designed specifically for tennis movement. Then I do weights, but I switch the days: one day it's upper body, the next day it's lower body. Then I do stomach and back pretty much every day.
Once you change the technology - from a film camera to a video camera, or from an 8-mm camera to 16 mm - you change completely the content. With 8 mm, a leaf on a tree will be made up of maybe four grains. So it's very impressionistic, almost like Seurat. If you switch to 16 mm, the technology gives you hundreds of grains on that leaf.