If you're planning a trip this year, you're probably asking how to stay healthy. The last thing you want to do on vacation is get sick.

The more you spend in crowded areas like airports, the more likely you are to catch a cold or flu. The good news is that staying virus-free while traveling is as easy as following a few simple precautions. Here are five ways to stay healthy on holiday travel.

Flu vaccine

Getting yourself a flu shot is the best way to prevent yourself and others from getting and spreading the disease. The flu shot strengthens your immune system so your body can better fight the flu virus.

The flu vaccine can take up to two weeks to provide protection. The good news is that the flu vaccine is widely available in many places, including your local pharmacy. Your doctor may also give you vaccines.

avoid bacteria

Touching contaminated surfaces is the most common way to spread infectious bacteria or viruses. Just brushing your eyes, mouth or nose after touching a doorknob in an airplane restroom is enough to make you sick. Here's how to avoid this entirely:

Wash your hands regularly, including your nails, with soap and water or an alcohol-based sanitizer.

Open the doorknob and use a tissue or paper towel to turn off the faucet.

Do not touch your nose, eyes, or mouth after touching something contaminated by a sick person.

Wipe down armrests, tables, and other furniture with disinfecting wipes.

Make sure you stay at least six feet away from anyone who looks unwell, congested, or coughs.

stay hydrated

Staying hydrated is important if you are flying. Keeping viruses and bacteria out is one of the main functions of the nasal mucosa. The dehydrated and dry air in the cabin can dry out your nasal passages, making you more vulnerable to the flu in nearby passengers.

Carry a bottle of water with you when you go out and avoid caffeinated and alcoholic beverages.

Make sure you get enough sleep

When you get enough sleep, your immune system will be strengthened.

If it works, try to get a good night's sleep the night before you leave and be regular during the holidays. Follow these guidelines to get the necessary amount of sleep each night:

At night, keep your bedroom temperature cool.

Minimize your coffee and alcohol intake.

It's a good idea to turn off all electronic devices an hour before bedtime.

Consider bringing a sleep mask and earplugs to help you take a break from the plane or train.

Eat healthy

Maintaining a nutritious diet is essential all year round, and this is even more important when you are on the go. An effective strategy for maintaining immunity and avoiding infections is to eat a healthy, balanced diet that includes a lot of overall, immune-enhancing foods.

If you follow these basic guidelines, you will stay healthy while traveling.