There are some more versions at Archive.org.
BodyWorks 3.0. DOS-version.
Bodyworks Classic Edition. This one most probably is the reissue of some 4.0 version, but I am not sure. It can be also CD-version of v3, because it's 1994. But maybe v4 was earlier than known boxes.
Bodyworks 5.0.
Bodyworks 6.0.
Also, according to boxshots at this entry, v4.0 is 1995, not 1996.