The only two things that have been shown to work are caffeine - the equivalent of two cups - and a short nap.

If half of Americans said they had driven while drunk in the past year, there would be a huge public outcry. But because everybody sleeps, they don't realize that sleep deprivation and driving can be a deadly combination.

You have to remember those are just the people who admitted it. We believe the number is much higher.

You need to know your customer, work through the process. There's nothing that can take place of that personal level of interaction.

She's really shown wonderful skills. Her only downfall is she's short.

Up to a thousand milligrams of caffeine is considered safe for most people, which translates into about 10 cups of coffee a day.