Make friends with the dark. Daylight is important for your well-being, but your body needs darkness just as much to stay healthy and fit.
"Should the lights be on?" is the question often asked of children when they are put to bed for the night. It is instinctive in us humans that we associate light with security and darkness with fear. But in fact, darkness is incredibly important to us. It sets our internal clock and ultimately affects our health. But it is not just us humans who are affected by light and darkness, animals are also affected.
Above you see examples of light pollution maps of Denmark and Zealand, and here you can clearly see where we emit the most light at night. Try to see what it is like where you live?
*Fabio Falci et al, 2016, the new world atlas of artificial night sky brightness