By
eHow Sports & Fitness Editor
Difficulty: Moderately Easy
Step1
Be sure to drink water and/or sports drinks every 15 to 20 minutes. Don't let yourself get thirsty. Your goal is to prevent dehydration.
Step2
Catch the early water stops. Once you are dehydrated, you won't catch up.
Step3
Consider the research. You might be able to increase your stamina by as much as 18 percent if you take in 0.5 grams of carbohydrates per pound of body weight during the race.
Step4
Feel better by replacing not only water but also carbohydrates while running. These carbohydrates help to maintain a normal blood sugar level, as well as provide a source of energy for your muscles.
Step5
Try sports drinks, but also eat a banana, sports bar or sports gel.
Step6
Don't overdo it. While some fluids and carbohydrates are good, too much can cause stomach problems.
Step7
Beware of trying something new. Some marathon spectators hand out food, but it's risky to try something you haven't tested first in training.