"Get Up" is the fourth and final single released by R.E.M. from the band's sixth album Green (1988). It was included in the limited edition Singleactiongreen box set released in November 1989. The song was released as a single only in the US but failed to chart on the Billboard Hot 100. The song was written by Michael Stipe about Mike Mills. Mills always seemed to sleep late during their recording sessions for Green. This was Stipe's call for Mills to get up and work. However, Mills did not find this out until a concert in the late 1990s, when Stipe introduced the song as being about him.