What is "keep it up"

vb. 1 (context idiomatic English) To maintain or continue a positive streak. 2 (context idiomatic English) To maintain one's erection.

Keep it Up was the third album released by the rock band Loverboy in 1983. With new hit tracks like " Hot Girls in Love", the album became an instant hit, and reached #7 on the charts, as did the previous album released by the band.