If you are pregnant, the target is lower and you should aim to keep your glucose below 140 mg/dL as much as possible. One note: If your blood sugar is above 240 mg/dl and you have ketones, you should not exercise. Some sugar cookie recipes online pride themselves on not having to be chilled, but we think letting the dough chill out in the fridge is an essential step. KetoLogic recipes are delicious and entirely satisfying.