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It’s a question that has kept people awake at night for centuries: Which way should you lean when you’re going in for a kiss? 几个世纪以来让人夜不能寐的问题就是：接吻的时候以什么样的姿势倚靠？ One study found that 80% of people lean right when kissing romantic partners. 一项研究发现恋人之间接吻的时候80%都会偏向右边。 But why? In their paper, psychology researchers from the University of Saskatchewan in Canada point to the theory that this habit could be learned in infancy, as babies tend to make more rightward head turns. 但是为什么呢？在这篇论文中，加拿大萨斯喀彻温省大学的心理学研究者指出：这一习惯可能是在婴儿时期习成的，因为婴儿会倾向于做向右转动的动作。 | 
