It's basically a way of sucking up to someone and it's almost as annoying and shallow as when girls post shit like omg stop being so perf! and then of course the required response is no that's you bb ð and it goes back and forth like that.
Temperature receptors. The sensory system involved in perceiving the changes in skin temperature begins with free nerve endings found in the dermal and epidermal layers of skin that can be functionally classified as cold and warm thermoreceptors.
The hypothalamus monitors the temperature of the blood running through it, the hypothalamus will then send nerve impulses to the heat gain centre in the posterior hypothalamus (Co-ordinator). Nerve impulses are then sent to the skin (effector). There are a number of mechanism that occur to conserve heat.