A long history of empirical evidence indicates that "sleep until you are hungry and eat until you are tired" works for many globe orbiting types. A workout or a couple of drinks are often used for self-medication under stressful conditions.
Length of layover is an important factor in adjustment and don't man your jet with low blood sugar.

The effect of "jetlag" seems to vary with the individual, but the real secret is being able to get sleep prior to flight or during a long flight.

Some of us can go 24 hours without food with little effect and some get weird after just four hours with nothing to eat. Some can drink three double expressos and then go to sleep and some will be kept awake all night. Lots of variance in the human animal, even the same animal on different days.