It's not Bell's, Bell's is more like Face Tourettes. What Colten has is most likely what I said, one side of his brain doesn't has the stamina that the other one does. This is the result of only using one side of the brain, but its weird, because if its his right side that gets tired, and he's right handed, so he's obviously using the left side of his brain more, so it should have lots of stamina, because he is right-handed. Its the left brain that controls right face movements too, so it shouldn't get tired. Colten must do things with his right side of his brain a stuffLOAD more then he uses his left side of his brain, because the left side of his brain is getting lots of work/training from him being right handed.