The middle seam of chest muscle can be practiced at home. Let's see what we have learned. I have personally experienced how to make the best muscle series with the least money. )

1, tool (puller) 2, action (puller pulls forward from behind) 3, the main point of action is to pull forward from behind, and the arm should be curved (the arm should hold the tree from back to front, and the shape of the arm must be kept good). Tip: practice several groups standing first, then lean forward and bend over to do several groups. Each group has 10 to do 6 or more groups (3 groups of standing exercises and 3 groups of bending exercises). The tensioner has five springs. The first few groups practice with the usual number of springs, and the last few groups practice with the number of springs. 4. Instead of the gym action: 1, the chest clamp device clamps the chest, 2. Pull the chest with a rope (I don't know exactly what this action is called anyway). 5. Side effects: Due to frequent practice, I have deformed the wire spring of the tensioner (but it does not affect the use). Haha, again, people who can't afford the gym can exercise. This is not an article reposted anywhere. This is my real experience, for those who want to exercise but can't afford the gym. That's all I know.