Flex (1988)

Abodybuilding film starring Harry Grant and Tom Platz. Grant was Mr. Los Angeles and Mr. Southern California, Platz was a Mr. Universe title-holder. Grant plays Vince, personal trainer at a gym in San Diego who wants to open his own gym. To get the money, Vince dates a rich heiress, but gets caught by his former fiancee. Vince's plans for a new gym take a downturn from there, being exposed by all related.