When I bite down on a fruit like an apple or peach, which jaw should dig in?

Question

Upperjaw goes in the fruit or lowerjar digs up?

Answer 1

a combination ?- your upper jaw does not ever really move without the help of your neck. It's awkward and probably not good for your neck to strain it every time you eat--- that's why your lower jaw is built to be the moving part.  A combination would utilize the strength of the lower jaw with the stability of your upper. That's how we were made to eat, there's no sense in trying to change it.  

Answer 2

i think when i bite into an apple it's a mixture of both