Listening to music through headphones while exercising can be dangerous. Blood may be diverted from the ears to the limbs leaving the inner ear more vulnerable to damage from loud sound.[18] A Finnish study[19] recommended that exercisers should set their headphone volumes to half of their normal loudness and only use them for a half hour.[18]
Courtesy:http://en.wikipedia.org/wiki/Headphones
Courtesy:http://en.wikipedia.org/wiki/Headphones
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