Actively exercising can be also a way to control diabetes if people do not like controlling their diet everyday of a month. Most important things is people who have diabetes should know basic knowledge about it -- atleast to the extend of 1) what kind of diabetes they have, 2) what is the possible origin of it?, 3) how the drug or insulin they take modulates their diabetes given their calories intakes, 4) tack their calories down and never stay hungry to control the insulin level.