As light is a key input for maintaining the 24 hour human circadian rhythm, people living at Arctic and Antarctic latitudes with less balanced (and fluctuating) day/night hours make for an interesting case study of how to adapt to changes in circadian rhythm \cite{Arendt2012}. But until we understand more about how to control our body's responses to changes in circadian rhythm, it might be based to practice regular sleeping routines and habits to avoid the nasty negative side of changing rhythms.

Contributions

Samantha Yammine edited the text. She is a Science Communicator nearing the end of her PhD at the University of Toronto studying how stem cells build and maintain the brain. You can follow her on InstagramFacebook and Twitter.  
Ernesto Llamas wrote the text and made the illustrations. He obtained his PhD in Biotechnology from Universitat de Barcelona doing his research at Centre for Research in Agricultural Genomics (CRAG). Creator of Sketching Science. You can follow him on Instagram as @eellamas