You'll recall that Trevor is a triathlete. He demands a lot of himself. You can see the demand of Trevor's training and competition by reviewing his registration record. You might also recall that Trevor's first experience in a triathalon was not good. So what advice would you give him regarding carbohydrates if he came to you and said, "Jennifer, my first triathlon was a disaster. A couple of miles into the 10 mile run I had to decrease my pace to a slow walk and after 8 miles I just couldn't continue. I didn't complete the triathlon. What can I do from a nutritional standpoint to help me out?" Which of the following would be the best and most accurate advice to offer Trevor to help him understand the importance of the consumption of carbohydrates during races? A. When carbohydrates are consumed during exercise, more blood glucose is available and the constant supply helps the body to be able to continue to use carbohydrates as a fuel source. B. When carbohydrates are consumed during exercise, the breakdown of muscle glycogen is increased. C. When carbohydrates are consumed during exercise, more proteins can be used as a fuel source. D. The ingestion of carbohydrates decreases the intensity of the activity and increases fatigue. When you're done with this question, let's spend a few minutes talking about the effect of exercise and training on muscle and liver glycogen stores.