Westhill Consulting Travel and Tours, Singapore wants your vacation more enjoyable and free of hassle, here are some advice on how to avoid having a jetlag. • Hydrate. You can quickly be dehydrated in the airplane cabins since they are dry and pressurized, this will make you feel really sleepy, what you should do is drink lots of water during the trip since it can help you ease the process. This doesn’t necessarily stop the jetlag, but it will aid the dehydration so it won’t add to your fatigue.