It is the middle of flu season and doctors said the best way to avoid getting sick is to boost your immune system.

The immune system defends your body against diseases. Your body does this by making proteins called antibodies, which destroy viruses and bacteria entering the body. Experts said one of the most manageable ways to keep the immune system in check is to make healthy lifestyle choices such as exercising regularly, getting 7 to 8 hours of sleep a night, managing stress and avoid smoking and drinking as much as possible.

Experts also recommend making sure all your vaccines are up to date.