Lifehacker Australia addresses how to prepare for a time zone-changing trip, sticking to the plan, and recovering quickly upon return.
If you have the flexibility, adjust your sleep schedule to slowly move it towards that of your destination. Try adjusting your sleep schedule by one hour each day. If you’re going west, wake up and go to bed one hour later for a few days before your trip. If you’re going east, wake up and go to bed an hour later.
In addition, try a fasting diet to reset your internal clock around food availability. You can either try for a strategy that involves feasting and fasting over a number of days or one 16-hour stretch.