To strengthen your immune system and avoid getting the flu and gastroenteritis this winter, there are several things you can do. Make sure to get enough sleep, eat a varied and balanced diet rich in fruits and vegetables, and low in added sugars. Regular physical activity can also help boost your immune system. Remember to wash your hands frequently and wear a mask when necessary. Consider getting vaccinated for the flu if possible. Taking a vitamin D supplement, especially from October to April when sunlight exposure is low, can also support your immune system. Remember to consult with a healthcare professional if you have any additional questions or concerns. Stay healthy this fall and winter!