I eat well balanced meals and exercise regularly, but i recently tested my blood sugar and it read at 56. is this dangerous? should i see a doctor?

Blood sugar: I wouldn't put much too stock in 1 random measurement. As long as you're not getting dizzy, faint, sweaty, or having palpitations - this is probably an error in the measurement, or its just a normal reading for you body without clinical significance. Blood sugars fluctuate throughout the day depending on what and how long ago you ate. If you're having symptoms, then see your doc.