Oh, I know, I get the logic ... but I get screwed up either way. When I travel to Europe for work, I don't even try anymore to get myself 'right.' I get to the rehearsals in the morning, nap in the afternoon, get back to the hall for the concert in the evening, try to go to bed after a post-concert drink, wake up at 3-4 in the morning ... rinse, wash, repeat. I'm always exhausted and off my game, but as long as I am where I'm supposed to be when I'm supposed to be doing my job to the best I can, that's all I can do. But I know that the work I bring along with me to do while the concert is ongoing ... isn't at the highest standard, and I miss things, and I don't work as quickly or as efficiently. And people think touring is so glamourous and all those places I get to see! Heh, it's a wonder I see anything outside the concert halls and hotels. At the beginning of tours I really try to stay awake all day, see some stuff, do my work, but halfway in, I give up. Some of my colleagues take various substances to help them get through, some their clocks and bodies quickly and easily adjust. It's just an individual thing, but I would hate the rigors of a baseball player flying coast to coast. I couldn't do it well and I'm sure there are some that really don't. It would be an interesting study to follow two players of equal levels around for the season, maybe even teammates ... choose one that adjusts well to time zone travel and one that doesn't ... and track how they play day to day and see what difference there is.