In 1954, two researchers at Canada's McGill University accidentally found how people be taught to repeat habits that's beneficial to our survival. An electrode implanted within the mind guard brain health supplement of a rat had slipped from its supposed place and had come to rest on the medial forebrain bundle, a group of nerve cells that leads from deep within the brain to the prefrontal cortex. Upon delivering a series of electrical shocks to the electrode, the rat displayed a eager curiosity in the area of its box it had been exploring when it acquired the primary jolt. Upon further investigation, Olds and natural brain health supplement Milner realized that what they'd found was the brain's reward center, a system of regions associated with delivering a sense of pleasure in return for sure behaviors like eating and mating. This discovery was revolutionary