When: Everyday during our life...

Where: Anywhere you feel like... :)

What: Playing loud music for less than an hour can damage our hearings for 5 years. The loudness should be at the level which someone else can't hear your music when you have earphones on...

Why: Playing music with headphones could let people have a harder time to hear, when you get older. This is because, deep inside your ears, there are tiny hair that helps you to hear the sounds. If it vibrates too much, It may damage those hairs and may not become better.

Sound expert, Prof James Bridges provides some tips:

- keep the volume down

- use them from 1~2 hours (no more than that)

- don't push the earplugs too far inside your ears.