Stay Hungry is a 1976 dramatic comedy film by director Bob Rafelson from a screenplay by Charles Gaines. The story centers on a young Birmingham, Alabama, scion, played by Jeff Bridges, who gets involved in a shady real-estate deal. In order to close the deal, he needs to buy a gym building to complete a multi-parcel lot. When he visits the gym, however, he finds himself romantically interested in the receptionist (Sally Field) and drawn to the carefree lifestyle of the Austrian body builder "Joe Santo" (Arnold Schwarzenegger) who is training there for the Mr. Universe competition.
Probably. There is fighting and people are hit with weights and gym equipment. I wouldn't be surprised if the actors actually broke ribs and whatnot doing those scenes. It looked really dangerous.
There is a particularly scary scene in which a man is drunk and high on "poppers," raging and assaulting people, including a woman he forces to inhale poppers as well.