How does something that feels cold to the touch of a human have the ability to give off heat

I think that if it feels cold that the human body but still gives off heat then it is just cooler that the human body(which is like 98.7, I am not sure how hot the human body is so please don't yell at me that it is wrong). Hope this helps

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme