the body absorbs sugar quickly. that's why people can get a "sugar high" and then crash. you probably just absorb it more quickly than others. instead of trying to get your body to accept sugar why don't you eat more foods that are more likely to give you energy like nuts?
why does sugar make me tired? i can have 1 piece of hard candy and 5min. later i get so sleepy. i'm not diabetic. can i change how my body processes sugar?