Nothing gets you "moving" like moving . . . or eating (but that doesn't have anything to do with this post).
Are you stuck?
Do you feel weighed down by a load that you just can't drop?
Have you got some goo in your gears?
Try running. Running is an all natural, safe, effective way to get your bowels moving. Running is so effective that marathon participants have been known to have a bowel movement on themselves during the race. Now THAT's effective.
Aside: Can I just say that when I went looking for a suitable image for the runner, I found a lot of images showing this guy and the word, "fail." Although he clearly had an accident, he is a far cry from a failure. Personally, I have never run more than 10 miles in a single event: that is just over 1/3 the distance this man ran. Not only did he run a marathon, but when he had to "go," he did not let that stop him.
Is it gross to run in poop? Sure, but this guy was able to finish his race in abhorent conditions and he was only 18 years old. I don't know many 18 year olds who have that kind of determination.