06/09/2026
Exercise With Type 1 Diabetes - What You Need to Know
Exercise with Type 1 is incredibly beneficial but it requires more planning than it does for Type 2 or pre diabetics. If you have Type 1 or care for someone who does, this one is important.
Different types of exercise affect blood sugar in different ways. Aerobic exercise like running, cycling and swimming tends to lower blood sugar during and after the activity. Anaerobic exercise like heavy lifting and sprints can actually raise blood sugar temporarily due to hormonal responses. This is why monitoring before, during and after exercise is so important.
Timing insulin around workouts matters. Going into a workout with too much active insulin can lead to hypoglycemia. Going in with blood sugar already high can make things worse before they get better.
The key is knowing your own patterns. Everyone responds slightly differently. Logging your blood sugar before and after different types of workouts over time gives you data to work with. A CGM makes this much easier.
Exercise is one of the best things someone with Type 1 can do. It just needs to be approached with awareness.