To be honest, I love working late into the night. But I've made an important decision to quit doing that, and I've started to hit the bed by 11 p.m. at the latest, so that I can get up at 5 AM. Now from a science perspective, it's proven that some DNA controls our natural biological clock. Most people, myself included, have a normal biological clock that tells us that we ought not to work late into the night. Our body sustains itself with various functions triggered at certain points in time for maximum health benefits, so violating that by staying up late chronically brings illness to one's life. For example, the liver processes body toxins during our sleep at night. Staying up at night will interrupt that important process and leave toxins untreated. So, my fellow entrepreneurs and Amazon sellers, please take care of our health by sleeping and waking up on time, so that we have a healthy body to enjoy the fruits of our labor in business. Cheers!