The less (mentally and physically) active you are, the less fuel (sugar) you require.
Sugar in the diet should come from primary organic raw sources, such as sweet fruits with seeds.
Natural sugars are also drugs when taken excessively. Refined and hybrid fruit and vegetable sugars slip past the liver like a slipping gear. The liver tries to recognize the sugar, but for the most part, is in unidentifiable and slippage occurs as unprocessed sugar enters the blood rapidly, causing a "high", - or sugar rush – which has been described by many people addicted to refined sugar or even by people hooked on fruit or carrot juice.