Plant took pity upon these girls who would flock to the hotel rooms of the band to offer them " favors " . In an interview he gave in 1975 , he provided an explanation of the lyrics : Led Zeppelin frequently performed " Sick Again " in concert ; during the 1975 and 1977 tours , it was often the second song they played . A performance from the 1979 Knebworth Festival is included on the '' Led Zeppelin DVD '' ( 2003 ) . The song was dropped for the band 's final tour Over Europe in 1980
Over Europe
Tour Over Europe 1980
Sick Again