(For my serious consideration.) If you were in the fiction section of the bookstore, or even the YA urban fantasy section specifically, which title would you be likelier to pick up?
(Just because I'm curious.) How high do you set your thermostat for regular at-home hours?
Body type would have something to do with that last question, I'm sure; but I don't think it's as simple as "big people are warm; tiny people are cold." In fact, a lot of skinny people are skinny because they have metabolisms that burn like rocket fuel; therefore, they are comfortable at lower room temperatures than the average person. In addition, I'm betting it has to do with what you're used to. Those from toasty parts of California really can shiver and pile on sweaters when it's 62 outside. I have seen this personally. Meanwhile, Alaskans often wear shorts when it's 45. Again, personal witness.