Like "Like mentioned below, 74 is a perfect sugar. However, if your bloodsugars run a little higher than they should, a blood sugar reading of 74 may make you feel a little weak because your body had adjusted to high sugars. My sugars used to run in the 250-350 range. So, whenever its anywhere below 90, I feel shakey, sweaty, etc (signs of low sugar) and its not really because Im low, but rather because my body is not used to a "normal" blood glucose."