Unfortunately, there is no such thing as consistency in many teenagers' lives. Many teens like to sleep late on weekends. The teenager can then go back to sleep for an hour. Likewise, taking the insulin later than usual results in overlap with the evening insulin and a greater likelihood of low blood sugar. Once again, supportive adults must be available to make this plan work.
Consistent exercise is often a problem.
Seasonal sports, such as football or soccer, call for heavy exercise for a few months, but may be followed by weeks or months of little activity. Blood sugars will vary and the insulin dose and eating plan may need frequent adjustments for changes in activity level. Daily exercise is also very effective in controlling weight. Consistency in areas that would benefit diabetes control sometimes needs to be compromised in helping a teenager to develop normally. Mood swings may change the blood adrenaline level, affecting blood sugars.