What does it mean when your skin hurts all over you body?

It can mean a number of things. Aches and pains all over your body can often mean you are catching a cold or the flu. Or it can mean you did too much exercise and strained yourself. If the aches are accompanied by a fever, it is probably a flu or a virus of some kind, and you may need to talk with your doctor or nurse practitioner. Usually, pain that comes from too much strenuous exercise (even walking a long distance) goes away in a day or so, and warm baths can help with this.