Day as well as night are an all natural rhythm of life. For millennia prior to the electrical light was created folks had to live mostly by the natural cycles of dark and light. It’s to be expected thus that the human body has used these cycles in tactics that encourage health and this different from their website far may have negative effects. It appears that this’s the situation. Sleep disorders, depression as well as ageing and cancer are several of the disorders which are impacted by bad “light hygiene”.