i just realised that the hmmm... happy feeling i get whenever i see santa ng is a conditioned reflex!

A CONDITIONED REFLEX IS A REFLEX ACTION ACQUIRED FROM PAST EXPERIENCE OR LEARNING WHICH IS ORIGINALLY INEFFECTIVE IN PRODUCING THE RESPONSE.

&!
A reflex action is an IMMEDIATE response to a SPECIFIC STIMULUS(mr ng) without conscious control.

im left with one day and tonight to study physics.
sighs.
and 0.25 days each for biology and history.