Research shows that there is very little benefit for runners who limit performance drinks during training workouts. Matt Fitzgerald, author of this article found on running.competitor.com offers some insight into the way our bodies burn calories and fat during intense workouts. Hopefully, this accurate and easy to understand explanation will help you decide when and if it is appropriate for you to limit calories.
Limiting Performance Drinks During Workouts
Athletes who fast or are tempted to fast during workouts operate on the belief that the calories in ergogenic aides simply supplement the calories eaten during the rest of the day and thereby increase the day’s total calorie intake. But this is not the case. Studies have shown that when athletes consume carbohydrate during exercise, they eat less during the rest of the day. So by using a sports drink or whatever during workouts you get the advantage of better performance without the disadvantage of increased total daily calorie intake.
The other fear that lies behind the choice to restrict carbohydrate intake during workouts is the fear that doing so reduces the amount of fat burned during the workout. This is true. Your body will burn more carbs and less fat in workouts during which you consume carbs than during workouts in which you fast. But this does not mean that using a sports drink during workouts will make it harder for you to shed excess body fat. With respect to losing body fat, what matters is not the type of calories you burn during workouts but how many calories you burn, and you will usually burn more calories in carb-fueled workouts because you will be able to work harder in those workouts.
Runners are in training for a competition have to pay careful attention to what they eat and drink at all times. They must know their own bodies and be able to accurately interpret the signals from the body before, during and after a training session. Ignoring hunger or thirst is normally a bad idea, however sometimes limiting calories for short periods of time can work in a runners favor. In order to burn off excess fat inspire a runner to increase distance or speed runners can safely limit high calorie foods and drinks during training sessions.