“If you diet and during that time of dieting you do not use your muscles lifting heavy weights (for you), your body will lose muscle and fat, also, the body will even take bone for nutrition. Less lean mass lowers your RMR and opens the door to weight gain once a regular diet is resumed” Scott Farley We as humans have not evolved as fast as the industrial/computer world around us. We also don’t do enough exercise, or the right exercise to maintain muscle mass and mobility as we age. Losing this lean mass lowers our daily caloric requirements. Why do we have trouble maintaining a healthy weight? In a few words, life is too easy. We are genetically programmed to overeat when we do find food. Our current lifestyle requires few calories to acquire that food. The human body is very complicated and has evolved over many thousands of years to the human we are now. This modern human is about the same as the human of 3,000 years ago. We have language. We learn and adapt to our surroundings quickly. We build on current knowledge quickly no matter what the method of delivery is. 3,000 years ago, a lower percentage of humans were educated beyond speech. Writings were passed on via voice to the masses. Trades were taught to individuals or smaller groups. Families spent much more of their daily time with tasks related to relatively real time survival. Men were generally the hunter-gatherer, women cared for the nest. Clothes were made, traded. Life was much simpler, and much more real. Real energy was required to have food for the family. There were times that food was not available. The human body was designed to walk around looking for food for quite some time before truly starving. We have great stamina and are genetically programmed to overeat when we do find food. THIS IS KEY. We are genetically programmed to overeat when we do find food.