I haven't been jet-lagged for years, I travel like a professional...

  • always carry on luggage (luggage under the plan is lame)
  • run for the customs barrier off the plane (everyone wonders why you are running until they get to the queue and you are at the front)
  • almost never pickup local currency - everything goes on the plastic.

and yet for some reason the first time I'd had to do PST (-0800) to GMT I'm waking up at odd hours and doing email & coding for an hours...

Not cool.

What is it about the -0800 --> GMT travel that makes it jet-lag prone? (or have I just devolved into a into a non pro traveler?)