Is it normal that i am obsessed with doing this?

Okay, so whenever the fireplace in my house is on, I always sit by it for like 2 minutes. I only warm one part of my body, for instance my back or my lower thighs. Then I quickly run and sit and/or lay on the average room temperature couch and enjoy the feeling. For some odd reason, I love doing this and do it often. I like the feeling of an extremely hot temperature to an average temp, which feels very cold at that point. IIN??