Howmanyhoursdoyouspendsittinginachaireveryday?Eighthour...
問題詳情：Howmanyhoursdoyouspendsittinginachaireveryday?EighthoursintheofficeplusthreehoursinfrontoftheTVafterworkistheusualsituationformanypeople.Youprobablydon’tneedanexperttotellyouthatsittingtoomuc...