A question to an honest (= Materialist) Atheist

Material and physical aren’t necessarily the same thing.

You mean, like, why do I choose to breathe and not not breathe right now? Or: why do I choose to breathe air and not Zyklon B right now? Or: why did I choose to eat food and not cyanide just now? Or: why will I probably step out the door in the morning and not out the window? Or: why will I probably cross the road safely and not jump in front of a car?