Strengthen Your Immune System with Two Small Changes

The immune system defends the body against infection and disease. Strengthen your immune system with small changes.

Intermediate

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Has your co-worker ever had a cold, and despite sharing an office you stay healthy? You can thank your immune system.
The immune system is a complex system of cells, nerves, and tissues that protect us against invaders. Once your immune system defeats a virus or germ, it records all of the details.