A few days ago, I watched someone do something that caught my attention. He tore open the first sachet angrily. Then poured it into a bottle as if he was arguing with someone who wasn't there. A few seconds later, he tore open a second sachet. Same aggression. Same urgency. Like someone trying to buy himself a few more hours. A few more hours to stay awake. A few more hours to keep going. He emptied both sachets into a bottle containing a non-alcoholic energy drink. In his mind, he seemed to be creating an alcoholic energy drink. A kind of do-it-yourself brewery. At least that's what it looked like. If you've never noticed this trend, you may not be paying attention to what is happening around you. Energy drinks have become deeply woven into modern life. Students drink them to study longer. Workers drink them to meet deadlines. Partygoers drink them to stay out later. Entrepreneurs drink them to squeeze more productivity into already packed schedules. Some people are now ta...