Winter is fast approaching, this season is also a time for more colds and flu. Despite you had a flu shot, there is no guarantee to keep you from getting cold or suffering from flu. 
Therefore, protect you naturally from cold and flu is the most smart choice. Here are some tips for you in this winter and later:
1. Balance healthy diet
“You are what you eat”. So your body immune system is strong or not to struggle against cold and flu depending on what foods you choose in your diet. Health begins in your digestive system, and fermented foods can keep that system running smoothly with plenty of immune boosting microflora.
Choose fresh and nutritious ingredients for your meal with suitable cooking methods. More fruits and fluids are suggested in the winter since many people are often not eager to drink water in cold weather.
2. Look out every touch
As cold and flu viruses which are spread by direct contact, there are many simple and good tips for you to say goodbye with them.
Firstly, wash your hand. Someone who has the flu sneezes onto their hand, and then touches the telephone, the keyboard, a kitchen glass. The germs can live for hours — in some cases weeks — only to be picked up by the next person who touches the same object. So wash your hands often. If no sink is available, rub your hands together very hard for a minute or so. That also helps break up most of the cold germs. Or rub an alcohol-based hand sanitizer onto your hands.
That is the reason for not to cover your sneezes and coughs with your hands.
3. Take a Sauna or do aerobics exercises
One theory: When you take a sauna you inhale air hotter than 80 degrees, a temperature too hot for cold and flu viruses to survive.
Aerobic exercise speeds up the heart to pump larger quantities of blood; makes you breathe faster to help transfer oxygen from your lungs to your blood; and makes you sweat once your body heats up. These exercises help increase the body’s natural virus-killing cells.
4. Plan your life style
Be joyful! At least once a day laugh, have fun, smile. These little pick-me-ups also boost your immunity.
Get a good night’s sleep- your immune system needs to rest in order to repair.
Always choose fresh air: by opening doors and windows to circulate fresh air whenever possible (germs live in stagnant air)
Keep your mind of giving up smoking.
5. Keep warm
Last but not least, you had better keep your body warm enough to avoid coughs, colds and flu.
In an icy weather, every one easily become shivering which depresses the immune system and makes us more likely to catch colds. Also, lower levels of sunlight and altered levels of hormones such as melatonin and serotonin negatively affect how the immune system performs.
We lose up to 30per cent of our body heat through our heads – so wear a hat and keep warm by woolen or thick clothes.