For as long as I can remember ive been able to "flex" something in my head and it creates something like pressure. The "pressure" feels a little like being under water. That sort of pressure, especially in the ears, is what ive made for words so far. I can do it rhythmically but it seems to tire easily which made me think of it as some kind of muscle. I can't say theres any negative effects yet, other than a lot of curiosity. Anyway I hope theres enough there to gather some sort of opinion. Thanks