A1C is a 1.5 to three-month average of glucose levels. It does not specify highs vs. lows. The goal of good control is not to have erratic swings in sugars, as this creates wear and tear on the neuropathic system. Being in the 70's is very normal (symptom-free) for many people and better overall than levels over 100. Just continue to follow a very healthy lifestyle with attention to eating unrefined foods as much as possible, as blood sugars are always subject to change over the life cycle.