It is a bad idea
It causes breakfast to be rushed and muscle burn to occur in the muscles of the jaw. This is an interesting experience.
Thankfuly someone started practising music after they had finished breakfast and this woke me up. My first thought was 'what a nice way to wake up' my second was 'what is the time' my third was 'ahhh!' further thoughts were muddled by high speed dressing followed by running followed by fast eating. but everthing was fine so everythind is alright.
I do have other posts to post - I just don't have all of them with me.