Rice, potatoes, bread, tortillas, cereal, milk, fruit, and sweets are all carbohydrate-rich foods
If you are hyperglycemic (High blood
sugars) you need to
reduce your carbohydrate intake.
Either of these conditions can be an dangerous but low blood sugars that drop under normal levels can lead to all kinds of problems, doing any exercise when your sugars are low will burn up more carbs and can cause your sugars to drop more, even to the point of inducing coma.