Our 3-year-old is taking gymnastics. Nothing too intense yet -- jumping in the foam pit, swinging on a few bars, hopping on the trampoline and doing some obstacle courses with some forward rolls. Lots of waiting in line and just a few bursts of activity. Because it pales in comparison to his activity on a playground I didn't think it required much adjustment in insulin dosage. But we've noticed two trends: First: he tends to run a little low in class. If he's on the way down, it takes a lot more carbs to prevent him from being low, and he lingers low for longer. He usually eats breakfast about 2 hours before, and if we try to under-bolus for breakfast he still runs high and gets too tired in class to participate. Second: About 25 minutes after class he starts rising quite high (250-300), rises for an hour and then drops. This doesn't happen on other days so we assume it's tied to gymnastics. Anyone else have gymnasts or have ideas for how to deal with this low-high combo -- and does anyone know the physiological explanation? Thanks!