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专家们长期以来都认识到运动对身体健康的好处。过去，联邦健康机构和医学协会建议美国人每周至少进行150分钟的中等强度运动或75分钟的高强度运动，并且每次持续10分钟的体力活动也计入总时长。然而，近期研究开始关注更短时间的运动，通常被称为“运动零食”，这些运动可能只有几分钟甚至更短——比如快速做一套开合跳、靠墙静蹲，或者在上班途中跑几趟楼梯。尽管尚不清楚是谁创造了“运动零食”这个词，但根据研究该主题的学者称，这个概念——即少量运动也能计入每周总时长——大约在十年前开始在医学研究中获得更多关注。“我们过去认为，运动至少需要持续10分钟才算有效，”斯坦福预防研究中心医学讲师、研究运动零食的Marily Oppezzo表示。
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