I'm in the no headphone camp.

I work in a call center, off the job I don't want anything in/near/around my ears. that discomfort I can get at work.

Then there's the hearing loss thing, I'm bad enough without headphones. and that hearing loss folks? Caused by the headphones. I wear earplugs at work now to protect what's left. Sorry to get preachy but this next generation will loose their hearing approx 20 years earlier than their elders. It's not worth it, unplug, turn it down.

I workout to unplug, to get away, to enjoy nature and other like minded people.

On the treadmill, eliptical, indoor trainer only.