Don't you feel cold

In my job I move around quite a lot and I have a lot of fat under my skin so I wear a t-shirt all year, in both winter and summer. People will often ask me if I feel cold, they say "don't you feel cold?". I see them wearing a jumper and I think, don't they feel hot? But then I think that they wouldn't wear a jumper if they were hot, they are different to me. 

Sometimes they will ask the same question on two or three different days, the answer is no, I don't feel cold. If I put a jumper on at work then I will feel too hot and sweat a lot and my t-shirt would be stuck to my skin. When people ask me the same question twice it probably means they think I don't know what is good for me. They are wrong, I know what happens when I wear a jumper at work, I get too hot and slow down, not good.