Originally Posted by Coldsnap
running is like the worst thing you can do for posture.
Ever heard of the causation and correlation fallacy?
A lot of runners do have bad posture, but that doesn't mean that running is the cause of it.
You could say that most people have bad posture, at least people who do not perform strength training regurarly to build up the right muscles to support good posture. People who run tend to not work on their strength and thus their posture is bad. Also, I've read that long distance running tends to take energy from muscles rather than fat, which would make them even weaker and more prone to bad posture (sounds very broscience-y though)