Nowadays, travelling across time zone is irresistible and so is the problem of facing jetlag. Here are some tips to prevent yourself from facing one. 1- Reset your body clock at least 5 days prior to the day you have to travel. 2- Try to book an overnight flight. 3- Drink plenty of water and avoid tea/coffee/alcohol. 5- Stay active and step outdoor. 6- Consider taking prescribed melatonin but try to avoid sleeping pills.