Ever noticed how, with earpieces in, we huff and puff like we're training for a marathon? It's like our ears have a secret gym membership and are dragging the rest of our body along for the workout. Maybe it's a cosmic conspiracy to keep us in shape, a "hearobics" program if you will. Or perhaps our ears are just really excited about the music and want to cheer it on with some enthusiastic panting. Either way, next time you see someone with earbuds in, remember: they're not just listening, they're training for the Olympics of eardrum aerobics!

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