Muscle

In "Muscle," a timid office worker named Simon finds himself drawn into a world of violence and obsession when he hires a gritty personal trainer named Terry to help him improve his physique. As Simon becomes increasingly consumed by his training, he begins to lose control of his life and relationships, leading to a dangerous and destructive spiral. Will Simon be able to break free from Terry's grasp before it's too late?

You can stream Muscle on: Apple TV Store Rakuten TV Sky Store

Some movies that have similar genres and were produced around the same time as Muscle include The Housemaid, Dying for a Baby, Lazareth, Fall, Galveston, Stone Creek Killer.