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.
the normal blood glucose level tested while fasting for non diabetics should be between 3 9 and 5 5 mmol l 70 to 100 mg dl the mean normal blood glucose level in humans is about 5 5 mmol l 100 mg dl however this level fluctuates throughout the dayhe actual amount of glucose in the blood and body fluids is very small in a healthy adult male of 75 kg with a blood volume of 5 liters a blood glucose level of 5 5 mmol l 100 mg dl amounts to 5g slightly less than two typical american restaurant sugar packets for coffee or tea