No, not what you think! I ran without my iPhone strapped to my arm today due to the threat of rain and literally felt naked. Other than races, when i'm thinking about other things, I always run with my phone, and not having it along felt really strange. Perhaps I should start alternating arms so that not having it on my left arm wouldn't feel so strange when I don't have it with me! Do you have this same reaction?
I'm wondering if when I start running with the water bottle during the really long distances i'll start feeling the same way on my shorter runs.