For some time, Beast had fallen into a bit of a depressive mood and nothing seemed to be helping. That is, until a stranger came along and gave Professor X an idea of how to help his dear student.
Beast was very unsure of this, but he decided to go through with it, though he may have some regrets for this first session. Well, either way, it's for his own good and he knows it.
Also, seems Professor X can't help himself with the brand name. :P