1
00:00:02,411 --> 00:00:09,461
It's 7 am, outside the school. But for many teenagers, the body still thinks it's night.

2
00:00:10,189 --> 00:00:17,593
During the teenage years, the body clock shifts later. You fall asleep later, and waking up gets harder.

3
00:00:18,329 --> 00:00:25,173
Those who have just got their licence set off at exactly that hour, not yet fully alert.

4
00:00:26,811 --> 00:00:31,689
It's not laziness. It's the natural cycle of a changing body.

5
00:00:33,619 --> 00:00:38,978
And when that body gets behind the wheel, sleepiness becomes everyone's business.

6
00:00:40,009 --> 00:00:46,288
You can drive at eighteen. But you still need your sleep. Protect it before you set off.