The normal blood sugar level for an average human being is between 82 to 119 md/dl. The blood sugar levels will vary from person to person and it can also differ according to what you eat. After every meal there will be a spike in the blood sugar levels and this is nothing to be worried about. Checking for sugar levels after a meal is not viable one has to wait till the count drops back to normal. If the sugar count drops too low then it can lead to a situation known as hypoglecemia. The symptoms of this condition incude lethargy, shaking and twitching and generally weakness.