Yeah, I've got a rotating circadian rhythm, as I mentioning in the Sleep thread here. If I don't have to alter it artificially, I go to bed at rather od hours but, always wake the same time no matter when I go to bed. (same at home time if I'm traveling, not the local time.)
Diet is another one for me. I have to watch my weight but, keeping consistent meal times or even a consistent nationality to my meals for more than two days in a row, well I haven't managed either yet.
On tour it gets worse for doing almost everything at odd times, and random times but, it's like that for anyone that tours or travels for months on end, moving to a new location ever day or two. The natural rhythms of the human body just can't keep up with that. With mine not being exactly perfect anyway, it all falls apart when I tour.