Dopamine is often misunderstood as the chemical of happiness, but its true role is motivation and drive. It activates when the brain detects something worth pursuing, not when pleasure is actually felt. From an evolutionary perspective, dopamine helped humans survive by pushing them to seek food, shelter, and safety. It kept the body moving forward through effort, discomfort, and uncertainty. In modern life, the same system is easily triggered by digital stimuli. Rapid, repeated signals train th

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