Our body's temperature cools, our blood vessels constrict (to conserve warmth), and we feel driven to put on more clothes or seek a warmer environment. our cooling body is an example of a (n) :

I believe that this is an example of physiological need. According to drive-reduction theory, a need is the physiological state that triggers motivational arousal. This aroused motivated state is often triggered by a physiological need called a drive. Psychologists use an emphasis on instincts, optimum arousal, a hierarchy of motives and a drive in an effort to explain motivation.