When you dream heavy means: Your life situation can be reflected in the dream of someone carrying too much weight. It can be a metaphor for feeling powerless, lacking resources or without support. You carry heavy loads or bags with you. This is a sign of the weight you have on your shoulders. If you feel heavy in your dreams, it could be an indication that your progress is slowing. Sleep paralysis can cause you to feel heavy or numb.
(in Dream Dictionary)