Sam uses fast-acting insulin before meals, and long-acting insulin at 8pm. He often goes for a run before breakfast during the week which is usually around 7-8am. When he finishes he gets ready for college then has his breakfast and normal fast-acting insulin dose before he leaves the house. He has noticed he starts his run with a good blood glucose but by the time he finishes he has risen quite high, which he doesn’t understand as exercise should make him go hypo. Then by lunchtime he is often hypo or around 4mmol/l.
What can he do to stop being high after his run? Also what can he do to prevent lows at lunchtime? Have a look at the before exercise, after exercise, and before bed charts. Follow them through and see what you come up with.