Electric light is an epidemic with several negative impacts. It disrupts our natural rhythms and has altered our relationship with natural light. It has changed what millions of years of evolution entrained in our bodies.
On average, 90% of our time is spent indoors under electric light. Unfortunately, electric light does a poor job mimicking the sun, making our days dimmer, our nights brighter, and our biology confused. Our bodies were designed to sync up to the one true constant in life, the sun.