Seated Chest Clam
Seated Chest Clam Exercise Description
The Seated Chest Clam is a bodyweight chest exercise performed while sitting upright. It targets the pectoralis major through horizontal adduction, using self-applied pressure between the hands to create resistance. The move can be held isometrically (steady press) or performed with a small controlled “open–close” motion at the shoulders to emphasize chest contraction without external equipment. Secondary contributors include the anterior deltoids and triceps, while the scapular stabilizers help keep the shoulder blades controlled and the neck relaxed. This drill is useful for refining pressing mechanics, maintaining a neutral spine, and learning to generate tension through the chest with minimal joint stress when executed with proper shoulder positioning.
- Muscle Groups: Chest, Pecs
- Target Muscles: Pectoralis Major - Sternal Head
- Assisting Muscles: Deltoid - Anterior, Triceps Brachii - Medial Head
- Stabilizing Muscles: Rhomboid Major, Serratus Anterior, Trapezius - Lower Fibers, Trapezius - Middle Fibers
- Body Area: Upper Body
- Body Parts: Chest
- Body Surface: Front
- Body Symmetry: Bilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Horizontal Shoulder Adduction
- Joint Involvement: Single-joint
- Muscle Location: Mid Chest
- Movement Direction: Horizontal
- Muscle Position: Anterior
- Gender: Female
How To Do The Seated Chest Clam Exercise
‘- Sit tall on a bench or chair, feet flat and hip-width, ribs stacked over pelvis, neck long and neutral.
– Bring hands to sternum level; bend elbows about 90 degrees slightly below shoulder height.
– Place palms together (fingers up) with wrists straight and forearms vertical; keep forearms aligned.
– Set the shoulders: keep them down and wide; avoid shrugging or flaring the ribs.
– Exhale and press palms together to create active tension across the chest; keep the spine neutral.
– Optional “clam” motion: maintaining palm contact and steady pressure, slowly open the elbows apart a few centimeters (shoulders horizontally abduct), then close them under control (horizontally adduct).
– Keep elbows and wrists in line; do not let one hand slide or rotate.
– Breathe continuously; relax jaw and keep the head from jutting forward.
– Release the tension gradually to finish.
Seated Chest Clam Tips
‘- Sit tall with feet flat and hip-width, keeping ribs stacked directly over the pelvis.
– Keep your neck long and neutral so the head doesn’t jut forward.
– Hold your hands at sternum level with elbows bent about 90 degrees just below shoulder height.
– Press your palms together with fingers pointing up, wrists straight, and forearms vertical and aligned.
– Set your shoulders down and wide, avoiding shrugging or flaring the ribs as you press.
– As you exhale, press the palms together to create tension across the chest while keeping a neutral spine.
– In the optional “clam” motion, maintain palm contact and steady pressure as you slowly open and close the elbows under control.
– Keep elbows and wrists in line so neither hand slides or rotates during the movement.
– Breathe continuously throughout, relaxing the jaw.
– Release the tension between your palms gradually to finish the exercise.
Seated Chest Clam Beginner Introduction
The Seated Chest Clam is a simple, seated bodyweight movement that challenges the chest without relying on external weights or machines. Resistance comes from the hands pressing into each other, so the chest muscles work by drawing the upper arms toward the center of the body. The main effort centers on the chest, with assistance from the front shoulders and the backs of the upper arms, while the muscles around the shoulder blades contribute to a steady upper body and relaxed neck.
This drill is performed in an upright sitting position with the hands held in front of the chest, elbows bent and lifted slightly away from the sides. The palms press firmly together to build tension, which can either be sustained as a steady hold or paired with a small, controlled opening and closing of the elbows for added chest engagement. Throughout the movement, the spine stays tall, breathing stays regular, and the motion remains compact and deliberate. Because resistance is self-generated and the range of motion is modest, this exercise offers a way to practice pressing mechanics and chest activation in a joint-friendly format.