**5. Conclusions**

Jet Lag is a phenomenon that is best explained by a mismatch between the circadian body clock and actual destination time. After fast (airplane) transportation to destination, the body clock remains set to departure schedules for a number of days that depend mostly on the amount of time zones crossed.

The circadian clock slowly adjusts to new schedules, thanks to external time-givers, especially the alternation of outside night and dark periods but also social meetings and meals.

Several remedies have been tried to speed up or bypass this adaptation, from no-nonsense tricks to bright light and melatonin to sleeping pills and stimulants. But, all in all, these remedies still tackle the issue in an unsatisfactory way. The best manner to cope presently seems to tailor the solutions to individual travels and demands.
