When I fly eastward across the ocean, I find it's more difficult to adjust to the time change  than when I return home on the westward trans-Atlantic flight. Why is jet lag different with east versus west travel, and what can I do to recover from jet lag?
D000222:Adaptation, Physiological / Q000502:physiology*; D001683:Biological Clocks / Q000502:physiology; D006801:Humans; D020179:Jet Lag Syndrome / Q000503:physiopathology* / Q000517:prevention & control; D013997:Time Factors