o avoid jet lag: do not eat on the plane - BBC documentary, looked at how 2 racing drivers who commute back and forth, performed better, with no food on the flight ... or I sometimes just set my body clock by eating in the time zone into which I arrive
If you go travelling long-distance, use something like Vick's first defence, to stop catching a cold, from circulating air on the plane. picked this up from physician to Olympic team to Beijing
