When you finally get 8 hours of sleep and it genuinely starts making sense why they recommend it
(europe.pub)
Sleeps 3 hours - tired
Sleeps 6 hours - tired
Sleeps 8 hours - tired
Sleeps 10 hours - tired
Sleeps 12 hours - tired
Sleeps 18 hours - tired
Sleeps 20 hours - maybe operational for 30 minutes
People: "YoU hAvE tO dO sPoRtS!1!1"