How might being too strong actually restrict a joint's range of motion?

Too strong a person has excess muscle. This excess limits the movement of a joint, because the muscle occupies the space that the joint would need to move.

Explanation:

All the structures of our body must be performed in a certain relationship to work well together and in a balanced way. So if one of the components grows beyond normal levels, body structure becomes unbalanced. No excess is good for the body and excess muscle has its consequences. Although some people believe that the stronger the muscles, the excess muscle makes it difficult to move the joints because it takes up the space that the joint would need to move.

when i got mine it was about a 6 or 7