Sugar taken before exercise raises the energy level
Sugar ingested before a contest or workout can do more harm than good. Even the intake of preparations like honey and lemon juice is counter productive. Sweets can trigger an insulin reaction.
The effect is to drive the body’s sugar into the storage organs. The only time you need to eat sugar to replace the amount that has been depleted is after an hour-and-a-half of steady exercise, such as a marathon race or a golf or tennis match.