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 the normal glucose reading should be? How to keep my blood sugar levels at a healthy range? It is true that when you know your blood sugar levels will help you get better control of diabetes. There are several tests you may undergo to check your blood glucose level if itâs in normal range or not. Basically, the normal blood sugar reading should be as following (according to ADA - American Diabetes Association for adult): Blood glucose before meal: 70 â 130 mg/dl. Blood glucose 2 hours after meal: <180 mg/dl.