Fatigue can occur at any time of day. Safety experts say drivers who feel drowsy should take the feeling seriously. Sleep can strike without warning. It only takes a second to shut your eyes, leave your lane and crash. It is typical for drowsy drivers not to realize they are falling asleep.
Many drivers believe they can stay awake by rolling down the window or turning up the radio.
But safety experts say these techniques simply don't work. What does work is a good night's sleep before driving and a combination of sleep, exercise and caffeine. When you wake up, exercise. It helps you become alert more quickly. Running or brisk walking will help.