Many frequent flyers stand by the fact that if you keep yourself hydrated and get plenty of rest the effects of jet lag should go within a few days. However, there are some other ways to stop Jet Lags effects and there are remedies to stop you getting it all together.
Manchester to Kos jet lag information
Lets assume you left Manchester at 9:00am. The flight takes approximately 4 hours 32 minutes so you would arrive in Kos at 9:12am Manchester time which is in fact 7:12am Kos time.
Your body will be telling you that its 9:12am but actually its now 7:12am