I was up at 6am and took the train to SFO. My flight was on-time to Dulles, where I had a couple of hours until I boarded the flight to London. Because the winds were in our favor, we had only six hours from takeoff to landing, which was not enough time to sleep. I skipped dinner and tried to sleep – managed about an hour (they were clearing the ice cream sundaes when I awoke) and could not really sleep the rest of the flight. Lay down with my eyes closed, but that was it.