**Nail Biting: The Surprising Link to a Stronger Immune System**
Nail biting, a common habit, surprisingly might boost the immune system. Repeated exposure to germs through biting may…
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Nail biting, a common habit, surprisingly might boost the immune system. Repeated exposure to germs through biting may…
Swallowing small nail pieces is quite common among nail biters, who may wonder about their fate in the digestive system…