If you are type 1, your basal is established under normal conditions. For me, I sit at a computer much of the day. My bg must remain consistent. If I were walking or active, such as stocking or working a grocery store, my basal requirement would drop slightly over time. Changes in activity do affect things. When my wife and I go shopping, I eat a fruit snack that I know will elevate me 30mg/dl. I easily work that off during a shopping trip. Doing this before the drop is better. Anticipate your activity level. I carry my medical bag with me all the time, and it contains the fruit snacks. Simple sugars are best. Complex sugars take longer to respond. I use Mott's or Welch's fruit snacks.

Do not adjust your carb ratio! On your Tandem pump, when you choose "activity," instead of choosing "exercise," choose "temp rate." Here you can adjust your basal rate to a smaller percent of your normal basal. You can program it to give you 50% of your basal for the next hour or 2 hours, etc. The temp rate is up to you - 80%, 50%, 20%... as is the amount of time your pump stays at that rate.

Do you eat a snack before you exercise i have been told to eat small snack before I do hard work

Thank you ❤️

Thank you