Research into fruit flies and circadian rhythms offers a reminder: Our bodies are fantastic machines, Bloomberg reports.

The 2017 Nobel for medicine went to three researchers who uncovered the workings of tiny clocks inside your cells — clocks that tell you when to eat, when to stop eating, and when to shut off that computer and get some sleep. The prize-winning work was done on fruit flies, but its findings are relevant to us humans, since once evolution invents something useful, it often spreads far and wide.