There are no official dietary guidelines for athletes because of lack of basis and failure of successful athletes to achieve such dietary practices. However, there are recommendations provided for routine carbohydrate (CHO) intake in grams (relative to the body mass of the athlete). It allows flexibility for the athlete to meet these targets based on their energy needs and dietary goals.
Suggestions for CHO intake ranges from 5 to 7 g/kg/day for general training needs and 7 to 10 g/kg/day for the increased needs of endurance athletes. If Reyna is an endurance athlete and she weighs 65 kg, she must consume 7 to 10g/kg/day of carbohydrates.
7X 65=455g
10X65=650g
Reyna must consume 455 to 650g of carbohydrates per day to maintain her weight and glycogen stores.