They work in a high stress profession with the lives of thousands of passengers in their hands so they can only effectively focus for short periods.

They work for two hours and then rest for 45 minutes.

The brain tires after two hours, minds wander, we become more forgetful, our error rate goes up.

Many Millennials are already burned out having graduated during a recession and now facing a pandemic, but in spite of your profession or age, a rest after every two hours can make you a dynamo.