Shopping literally drains the energy out of me. That's not a metaphor at all either.
I'm a very physically fit person and can run for long distances. But if I merely walk around the mall for 15-20 minutes, I get tired. My legs get tired, I get bored, I begin to feel dead inside; I want to leave!
I like to go to the few stores that in that past have had what I wanted. Then I like to purchase the clothes. If they don't necessarily fit right, who cares, just buy it, then get the hell out of there!
I've been getting better though. It, after all, might be worth a little extra pain to have clothes that fit.