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These are the most critical muscles for pulling the arm through the water.
The upper body is the "engine" of the swimming stroke, concentrating development in the chest, back, and shoulders. Swimming Anatomy
The chest muscles generate the power needed during the "catch" and initial pull phases. These are the most critical muscles for pulling
Swimming involves nearly every major muscle group working in a synchronized "kinetic chain" to overcome water resistance. Propulsion is generated primarily through the upper body, while the core and legs provide essential stability and positioning. 🦾 Upper Body Propulsion concentrating development in the chest
The rectus and transverse abdominis keep the body in a streamlined, horizontal position to reduce drag.