I posit you are particularly susceptible to the neurophysiological effects elicited by phytochemicals and other psychoactives in those specific beverages. This

I posit you are particularly susceptible to the neurophysiological effects elicited by phytochemicals and other psychoactives in those specific beverages. This may be simply due to genetics — maybe you have an under- or overactive neurotransmitter-metabolising enzyme oslt which is temporarily remediated by those drinks in a fashion which produces euphoria — but may also be mediated by diet, medications and even life experiences.