Looking to achieve a bigger chest? Strengthen your upper pecs with these effective and rare exercises. The clavicular pectoralis major and sternal pectoralis major are the main muscles in the upper chest. These muscles are responsible for various movements, such as rotating the upper arm inward and flexing the shoulder joint. Strengthening your upper pecs not only helps you achieve a well-balanced physique but also improves your overall strength and performance. Try incorporating exercises like the reverse grip bench press, cross-body incline chest press, standing Svend press, hex press/incline hex press, incline chest fly, fly variation, and landmine chest press into your training routine.