In addition to Humalog, many people also have a basal insulin to help them achieve their fasting blood sugar goals. Basal insulin is another type of insulin that mimics the background (baseline) insulin in people without diabetes who typically release a certain amount of insulin 24 hours throughout the day regardless of what food or beverages they’ve had.  Fasting blood sugar is your blood sugar without any food for at least eight hours. Many people measure this blood sugar level in the morning after a full night of sleep without food.