Butterfly . Exercise machine for chest muscles.

This chest trainer is designed for andisolated development the inner part of the pectoral muscles and the anterior deltoids. In common people and bodybuilding slang, this machine has a funny name "butterfly" - apparently due to the specifics of the main movement - you, like a butterfly, are trying to flutter your wings rhythmically, and perhaps because of the armrest pillows, which when not working are in a position spread to the sides like wings (they are also jokingly called “ears”) ...

The use of oval blocks (3) allows you to maintain constant tension throughout the entire trajectory, which distinguishes work on this machine from similar exercises with dumbbells.

Diagram of the device of the machine “Trainer for chest muscles” with the exact dimensions of its component elements:

The chest trainer consists of a frame with weights (1), which are connected with cables and pulleys to a lever mechanism (2), which directly transmits the forces of the muscle being trained; backrest and height-adjustable seat (4).