In france there is and underground train with platforms that always seem to be crowded. On top of this subway is an apartment building that they are testing this expiriment on. There Question is " Can the body heat of all those people waiting to get on train and the friction heat coming off the wheels generate enough heat to keep the apartments above 70 degrees F?" The scientists put a contraption on the tracks that uses the friction heat and turns it into electrical power then it travles up to the builing. In the roof of the waiting platforms are vents to let all the body heat rise and make it to the apartment biuling. I wonder what would happen if the subway got closed. Would the people in the apartments freeze?
so, can body heat really keep you warm for the winter? YES