Since the days of antiquity, our ancestors routinely fasted, abstaining from eating food and sometimes even certain drinks for prolonged periods of time. Hippocrates (460 BC-370 BC) and Plato (428-348 BC) discuss fasting in ancient Greek writings. Paracelsus (1493 to 1541), a Swiss physician, alchemist, and astrologer, considered along with Hippocrates to be one the fathers of Western medicine believed, “Fasting is the greatest remedy—the physician within”.

A common complaint you hear from people these days is about how tired they are. Indeed, with not enough time in the day, people sleeping less and eating worse, there is a short supply of energy. However, sometimes those six cups of coffees a day can start to take a toll. If you feel this way, maybe it’s time to consider these natural energy hacks.