Humans get sick more often than other animals because our bodies are special, we walk upright, use tools, and live in big groups. When one person gets a cold, it can spread to many others quickly. Like how germs travel through a classroom full of kids, germs also move fast in human cities and homes.
Examples
- A classroom full of kids shares germs like a game of tag.
- One sick person on a plane can make the whole flight sick.
- Humans passing around food at a dinner party spread illness easily.
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See also
- Why Do Humans Have Such Big Brains?
- Why Do Humans Have an 'Ugly Cry'?
- Why Do Humans Have a 'Second Wind'?
- Why Do Humans Get Sick From Space Travel?
- Why Do Humans Have Body Odor?