Muffler (silver) and exhaust pipe on a Ducati 695 motorcycle. A muffler (silencer in English) is a device for reducing the amount of noise emitted by the exhaust of an internal combustion engine.
Quick Answer. Normal blood sugar levels should be  less than 100 mg/dL when fasting and less than 140 mg/dL two hours after eating, according to WebMD. People without diabetes tend to have blood sugar levels of around 60 to 90 mg/dL before eating.
What are normal blood sugar levels? Fasting (blood sugar level after not eating for 8 hours) blood sugar should be between 70 milligrams per deciliter to 100 mg/dL. Your blood sugar should not be above 100 at any given time; If it is, this suggests a pre-diabetes condition. A level of 100 â 199 suggests prediabetes. A level over 200 suggests that you have either Type 1 or Type 2 diabetes. There are several steps in lowering your blood sugar.