Also eat meals during local time. I'm lucky and tend not to get jetlat (recently got back from Israel and was able to adjust right away). Another great tip is to trick your mind by setting your watch to local time. Safe travels! :)
So I was in the hospital this weekend (long story) and the doc told me that if you're on a flight longer than an hour, you gotta move your feet - walk down the aisle - it prevents blood from pooling and avoids blood clots which can lead to stroke!