Neo, I don'twant to venture too far off topic, but you mention that your friend had a hip replacement. The pictures of him (I am assuming the pictures are your friend) show him with a "Running Journal" hat and a running gear shirt of some sort. Is he able to run with his replaced hip? What's his age? These questions come from a person to whom running was one of life's greatest pleasures until aches and pains in the moving parts shut it down. Thanks.
Sometimes even a Blind Hog finds an Acorn