I can tell when I'm going to go to sleep. I can't take naps. I get plenty of sleep. Being sleepy makes you misperceive things. Young people need less sleep.
Coffee overcomes the effects of drowsiness while driving .
Drinks containing caffeine, such as coffe or cola can help you feel more alert, but the effects last only for a short time. At 55 miles an hour, that's more than 100 yards, and plenty of time to kill you. I can tell when I'm going to go to sleep . If you're like most people, you believe you can control your sleep. In a test, nearly four-fifths of people said they could predict when they were about to fall asleep.