Upon arrival in Tokyo, a good way to make the jetlag work for you is to program a visit to the Tsukiji fish market on your first morning. The market is already bustling with activity at 5:30am, and if you get there early you can get a glimpse of the most amazing seafood  being traded.  At 9:00am, when activity usually starts to wind down, you will be ready for a sushi breakfast featuring the freshest seafood in the world.  Great way to start the day and get ready to enjoy the rest of Tokyo.