Final answer:
To maximize digestion, a post-workout shake should have a carbohydrate-to-protein ratio of 4:1. Protein digestion reduces proteins to their constituent amino acids, and athletes should consume enough carbohydrates to meet their increased needs.
Step-by-step explanation:
Research suggests that to maximize digestion, a post-workout shake should have a carbohydrate-to-protein ratio of 4:1. Protein digestion reduces proteins to their constituent amino acids, and it is recommended that about 15 to 20 percent of total calorie intake should be obtained from protein. Carbohydrates are an important fuel source for the brain and muscles during exercise, and athletes should consume enough carbohydrates to meet their increased needs.