Not just nerves; the positive aspects of nail biting!

Nail biting, often seen as a sign of nervousness, may indicate perfectionism, a study reveals. Perfectionists may bite their nails when bored or frustrated by unmet goals. Surprisingly, nail biting and thumb-sucking in childhood might reduce allergy risks by increasing microbial exposure, strengthening the immune system. Research suggests these habits could offer unexpected health benefits.

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