What I'm basically asking here is, what is your preference of climates temperature-wise?
If you're the hot-blooded person, it means that you can practically stand any sort of frozen temps without so much as shivering. You'd most likely could live in some places as cold as friggin' Antarctica or Siberia or something like that. However, this also means that you're extremely sensitive to heat, & thus you'll most often sweat profusely whenever the temp goes above 80 degrees. If you'd go outside in this kind of heat, you'll get heatstroke very easily.
In other words: Hot-Blooded means that you love the cold, but can't stand heat.
Now, if you claim to be a Cold-Blooded lizardman/woman, you'd be the kind of person who would prefer to be in the blazing heat, preferably tropical areas. You'd most likely would like nothing more than to just lay yourself out on the beach & soak in the sun's UV Rays without even the slightest care about the risks of getting fucking Skin Cancer, or even burning your skin to the point in which all your skin literally gets seared to the point in which you've got no skin covering your body, & thus your flesh is exposed. On the other hand, if the temp is somewhere below 72 degrees, you're already shivering if you're not wearing a sweater or something, & if it gets any lower, you'll get frostbite with even the slightest chill, or you'll even end up getting instantly encased in a block of ice!
In other words: Cold-Blooded means the opposite; you love heat, but can't stand the cold.
So that's basically it, other than if neither of those apply to you, then you can just say that you're neither of those & be on your way...