Sleep has been called the third pillar of health, along with diet and exercise. Unfortunately, many of us still aren't doing it right.
Psychologist, author and magician Richard Wiseman stars in a video uploaded to YouTube channel In59seconds this week, which shines a light on one of the many risks of getting too little sleep. The phenomenon is called microsleep, or nodding off for just a few seconds.
Think a few seconds doesn't sound all that bad? Test your sleep quality with the video above to see just how much damage a microsleep can do.
How'd you do? Let us know in the comments.