why is it that in the mornings, or any other time when it is cold, the lower part of my back always seems to be the coldest? not to touch, but i mean thats the bit where i feel cold. does anyone know why this is? lame question i suppose... i wear trousers, jumper and shirt. is it because the jumper protects the rest of my back and front, but the lower back near the opening of the jumper lets the wind/cold air in a little bit? if so, why doesnt this also happen at the top, near my neck, and at my wrists? does it maybe happen its just i dont feel it for some reason? like more sensitive to temperatures on back?