A little sleep along the way can do wonders for how you look and feel at the other end. Do your best to include some snooze while you're traveling, or take the time to rest. If you find you can’t sleep, put an eye mask on and meditate or simply relax. It’s important to stay hydrated when traveling, especially if you are on a plane. Drink at least one glass of water per hour to help you feel better and look more refreshed. Add mint or fruit to your water for flavor if you desire. Limit your alcohol when traveling. Stick to one drink, such as a glass of wine. It’s often easier to grab fast food while traveling or to pack your carry-on with junk food. Neither of these things will help you look or feel your best though, so avoid the temptation. Instead, prepare a healthy meal or snack for the trip. Consider:  Sandwiches or wraps with your favorite filling Fruit that travels well, such as apples, oranges, and bananas Nuts and seeds or trail mix A small salad in a container Carrot and celery sticks Brush your teeth, chew mint gum, or pop a breath mint to freshen your breath. You can also reapply deodorant and spritz yourself with perfume or cologne. Carry a small spray bottle filled with water and a couple of drops of lavender oil. Spritz it onto your face to freshen skin.

TL;DR in Vietnamese:
Ngủ trên máy bay hoặc xe ô tô. Cung cấp đủ nước. Ăn bữa chính hoặc bữa phụ lành mạnh. Tút lại bản thân trước khi đến nơi.