There is jet lag and there is getting rest on a plane. If have multiple segments on a long trip a biz seat can with sleep. If get up at 3 am to catch a 6am biz trip to Europe then would be better off with a better timed flight, and a good nights sleep before. Time of year can make a difference. jetlag is harder in the winter as dark all day long, less of an issue in the summer, at arrival.


My approach is to rest well before travel, avoid flights that mean you lose a night sleep just getting to the airport, and get into the sleep zone as soon as you get on the plane. You will still have jet lag, but will be less fatigued. Oh, and get out in daylight and exercise on the far side.