Multiple choice general knowledge

Wearing headphones for an hour increases the bacteria in your ear

  1. 500 times

  2. 700 times

  3. 800 times

  4. 900 times
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is a widely cited trivia fact claiming that wearing headphones for an hour can multiply bacteria in the ear by 700 times compared to not wearing them. The warm, moist environment inside the ear canal when covered by headphones creates ideal conditions for bacterial growth, though the exact multiplier may vary.

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