The nutritional guide kit includes a set of nutritional guide cards, a large ring, and an athletic support device. The nutritional guide cards are preferably round cards which are made of plastic or laminated so that they may endure inclement whether conditions if left outside. The cards have indicia relating to daily dietary plans and instructions imprinted thereon. Specifically, the indicia on each card provides suggestions on what types of foods to eat for each meal and when to eat each meal depending on what time of day an athletic activity is scheduled. Each nutritional guide card has an aperture defined therethrough. The ring is inserted through the aperture on each card to bind the cards together. The ring is attached to an athletic support device so that a young athlete can conveniently access the cards throughout the day.