What muscle group is the primary mover during a push-up?

The primary mover during a push-up is the pectorals, which are the major muscle group targeted during this exercise. The push-up primarily focuses on the chest muscles, as they contract to raise and lower the body. When performing a push-up, the pectoral muscles are responsible for the pressing motion away from the ground, effectively working to extend the arms as you push the body up. This action emphasizes the strength and coordination of the pectorals, making them the main force behind the movement.

While the deltoids and triceps also engage during a push-up—contributing to shoulder stability and arm extension respectively—they do not play as dominant a role as the pectorals. The latissimus dorsi, while involved to a lesser extent for overall stability and support during the push-up, does not serve as a primary mover in this specific exercise. Understanding the mechanics of a push-up highlights the significance of the pectoral muscles in this movement, showcasing their role as the key drivers in executing a successful push-up.