I came across an article on The Register this morning reminded me that using an iPod/MP3 player while training outdoors is not a good thing from a self protection standpoint.
The article was about a man who saved a drowing woman, which in of itself is a feel good story, but the thing that stood out was that "The cries of a drowning woman were missed by headphone-sporting joggers, leaving her to be rescued by ....". So not only could you not hear someone coming to attack you, you might also miss someone's cry for help. I'm sure its not as clear cut as that, but it certainly something to consider when out alone using a iPod/MP3 player.
From the article:
“As usual there were joggers on the path. I saw a group of them run straight past her before I got there, but they had their headphones in and they couldn’t hear her. “They should just keep their headphones in one ear so they can hear what’s happening around them.”
I'm not sure whether that's a good idea. What do other forum members think?
If you're interested the article is avaliable at http://www.theregister.co.uk/2011/08/03/headphones_rescue/