“Baby Workout” is an R&B song by Jackie Wilson from the album of the same name. The track is about Wilson urging a girl to dance (work out) all night with him. It was Wilson’s biggest hit of his singles that charted on both the Billboard Hot 100 and the Hot R&B/Hip-Hop Songs.
It was his fifth and penultimate #1 R&B song. It was his second highest-charting song on the pop charts, peaking at #5. It was written by Wilson and good friend Alonzo Tucker, an original member of the famed 1950s Doo Wop group, the Midnighters. Wiki