I am known for never wearing a jacket and basically live in t-shirts whatever the weather. I own two jackets: one smart one which I carry all the way to my destination and then put on when I ring the doorbell or enter a restaurant only to take it off again. The other I bought from a second-hand retro shop and I think it was made in the 1980's and looks like something out of Breakin'. I wear it for effect, and for the opportune moment when I need to pop and lock.
Simply I hardly ever feel the cold, it is about 2 degrees in London at the moment and I only wear a jacket so children don't point at me and cry. People go "ooouuuuuggggghhhh" when I walk past and though I used to think they were going "ooooooooohhhh" I now realise it is definitely an "ooouuuuuggggghhhh" and not anything to be smug about.
I don't know what it is, but I seem to generate a lot of heat. I would love someone to follow me around with a body-temperature meter just so I could see if I am in fact warmer than everyone else. I am a lousy bed-partner; at best think 1994's "The specialist" Stone and Stallone sweat scene, at worst you will find me sleeping on the floor just so I can get away from the fiery blazing hell furnace that is a woman's sleeping body.
But I have one weakness. If I do on the rare occasion get cold, such as not eating all day and being stuck in the wind, I literally shutdown. I go very quiet and hardly move. It seems that if I lose my core-temperature it is deadly and no amount of toprock, uprock or 6-step are going to get me going again.
It is then food food food and nothing but food until I flame-on again.