If you're in a real pinch and must drive, drink two cups of coffee and take a 20-minute nap to let the caffeine sink in. Although research suggests that nicotine may help drivers stay alert, the National Institutes of Health doesn't recommend its use, since nicotine has its own safety problems. In the future, high-tech devices may help catch sleepiness before a driver veers off the road. The most promising, according to Willis, is a unit that tracks eye blinks and sounds an alarm if blinking stops. Other gadgets, such as vibrating seats and earpiece head-droop alarms, are on the consumer market, but they may lack sensitivity.
Devices can only go so far for the exhausted driver.
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