My best friend is awake roughly three hours more than I am every day. If we both die at 80 years old, he'll have been awake 10 years more than I will have.

I sleep eight hours a night on average; he sleeps about five. That means I'm up roughly 16 hours a day, whereas he's up around 19.

Here's the math: (3 hours more a day)(365 days) = 1095 hours / 45.6 days a year.

(1095 hours)(80 years) = 87,600 hours a lifetime / 3,650 days / 10 years.