After being told by his doctor that his cholesterol level is too high, Richard begins riding a stationary bike in his apartment building. As he gets in great shape physically, Richard begins having strange thoughts that there is someone following him on his daily rides. 　　译文(2): 在被医生告知他的胆固醇水平过高后，理查德开始在他的公寓楼里骑健身自行车。当理查德身体状况良好时，他开始产生一种奇怪的想法: 每天都有人跟踪他。