My bad habbit is like when it comes to those double pedalling parts of a song, i'll tend to move my head alot, and i must admit i love headbanging. There was once i headbang so much that i got so dizzy and i lost my balance. :lol:
another habbit of mine is i tend to do big actions like big strumming due to a sudden change in volume in music. like expoloding into the chorus. etc.