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What one minor change to the human body would be a game changer? (Reddit)
Some responses:
- Teeth grow back
- If there was a way to close your ears the way you can close your eyes.
- Separating the food and air intakes
- Being able to consciously tell your immune system what to fight and what not to fight
- Perfect cell repair forever
- 3 hours of sleep giving the same benefits of 8 hours
- Better designed knees