Just how that bit of happiness turns into a habit involves a pleasuresensing chemical named dopamine(多巴胺). It trains the brain to want that reward again and again—increasing the connection each time—especially when it gets the right cue(暗示) from your environment.thus destroying attempts to get rid of bad habits. Even scientists who recognize it find it hard to resist.“I don't like popcorn. But every time I go to the cinema, I have to eat it,” Volkow says.“It's fascinating.”nection, as some companies offer employees immediate payments for adopting better habits. However paying for behavior turns out, researchers say there are some steps that may help counter your brain's hold on bad habits: repeat,repeat,repeat the new behavior—the same routine at the same time of day. Determined to exercise?Doing it at the same time of the morning makes the brain recognize the habit eventually. If you don't do it, you feel awful. Exercise itself raises dopamine levels, so eventually your brain will get a feelgood hit even if your muscles protest. Reward yourself with something you really desire, Volkow stresses. You exercised all week? Stuck to your diet? Buy a book, a great pair of jeans, or try a fancy restaurant.
20.What's the subjective reason for being hard to break bad behaviors?
A.Some behaviors get deeprooted in our brains.
B.We prefer an immediate reward.
C.We value delayed gifts.
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