The immune system is the body system that provides protection against colds and the flu. This system is responsible for identifying and neutralizing pathogens such as viruses and bacteria that can cause these illnesses. The immune system includes a network of cells, tissues, and organs that work together to defend the body against foreign invaders and infections. To support and strengthen the immune system, it is important to maintain a healthy lifestyle, including eating a nutritious diet, getting regular exercise, managing stress, and getting enough sleep.
