The immune system is a complex network of cells, tissues, and organs that work together to protect the body from attack and disease. It is the body’s most sophisticated defence against the external environment and the primary mechanism for detecting and destroying threats such as viruses, bacteria, and parasites. The immune system is able to recognize non-self substances and produce antibodies to neutralize them, as well as activate cells such as macrophages that seek out and destroy foreign objects. It is an essential system that acts as an early warning system of danger and helps maintain a fit and healthy state. In summary, the immune system is one of the body’s most integral and powerful systems, stalwartly safeguarding our cells against invaders.

See also: brain stem, flow state, peak experience