I use a BCK-08 bluetooth adapter for $12 with my favorite headphones and place the iPhone in the magazine rack on a treadmill to watch Downcast while I run. Then, when lifting the iPhone goes in my shorts pocket and I put on a audio podcast to listen to or just music. I got a phone protector case from Gander Mountain in their canoe/kayak section for about $10 bucks (think iphone-size, heavy duty yet stylish ziplock bag) that the touchscreen works with and that alleviates worries of sweat/moisture damage. Plus, with the bluetooth, I don't have to worry about damaging the headphone jack if I were to bump into something.