Critical days of summer week 15: battling fatigue Published Aug. 30, 2010 By Heather Winters 17th Training Wing Safety Office GOODFELLOW AIR FORCE BASE, Texas -- Fatigue causes many problems for Americans, including falling asleep at the wheel and battle fatigue overseas. Some think fatigue is inevitable, but following these tips helps fight fatigue and feel fully rested. Sleep helps repair the immune system, body tissues and prevents future health problems. The average adult requires 7 to 9 hours of sleep, but Americans are cutting out their sleep for work and personal entertainment. According to the National Sleep Foundation, about 70 million people in the United States have sleep-related problems, however, only an eighth of those are diagnosed. People should get into a habit put them into a restful sleep quickly and follow that routine every night around the same time. Keeping a healthy body by exercising and eating a well-balanced diet can lead to better sleeping habits, too. A 30-minute cardio workout in the morning can help people stay alert throughout the day and feel ready for bed at night. Eating well-balanced meals also helps the body create natural energy. Oatmeal, yogurt, spinach, nuts, seeds and beans provide energy throughout the day. Don't tough it out! Those who feel even a little sleepy, especially when driving, should take a short break or nap. Signs that a body is ready to sleep are repeated yawning, heavy eyelids and a bobbing head. Other signs are wandering or disconnected thoughts, or not remembering the last few minutes of activity. Fatigue accounts for 100,000 car crashes per year, according to the National Highway Traffic Safety Administration. There are many rest areas to take a break at, but if there's not one around, pull into a parking area or to the side of the road, away from traffic, to rest. Following these tips can help people feel more rested and alert, and keeps everyone safe.