I think a major element of jetlag is psychological. Nobody ever tells me what time it is at home.
Before the BBC I joined the Navy in order to travel.
Imagine if you had baseball cards that showed all the performance stats for...
I exercise every morning. I do light weights - 5lb and 10lb arm exercises - and then lie and lift my arms and legs. It's all about keeping core strength. I do a lot of stretching too.