参与者还被询问多长时间做一次锻炼，并提供了体重和身高数据，用来计算出他们的体质指数（BMI）。
People were also asked how often they exercised, and provided weight and height so that body mass index, or BMI, could be calculated.
人脑说：“虽然你能够快速地算出答案来，但是，人们做算术题是为了锻炼自己，你这样快速地算出来对人们有什么好处呢？”
"Brain said:" Although you can quickly calculate the answer to, but people do arithmetic that is to temper themselves, and you quickly calculated what is the benefit of the people?
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