, they will cause your blood
sugar levels to spike. Insulin controls blood
sugar levels so when your blood
sugar levels spike, so do your insulin levels. The simple carbs are used up quickly, which will leave insulin levels high and you will get the feeling that you "crashed" (weak, shaky, lightheaded etc). It will then be necessary to eat more sugar to bring your blood sugar levels up again and it becomes a vicious cycle: sugar, increased insulin, requiring more sugar, on and on!!