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.
Share to: The normal blood glucose level in humans is about 4 mM (4 mmol/L or 72 mg/dL).The body, when operating normally, restores the blood sugar level to a range of about 4.4 to 6.1 â¦ mmol/L (82 to 110 mg/dL).Shortly after eating the blood glucose level may rise temporarily up to 7.8 mmol/L (140 mg/dL).