Building a bigger, stronger chest is one of the most common goals among gym-goers. Yet despite consistent effort, many lifters find their pectoral muscles lagging behind. If you’ve been pressing for months without noticeable gains, the problem isn’t necessarily your genetics—it’s more likely your training strategy, recovery, or execution.

In this comprehensive, science-backed guide, we’ll break down the eight most common reasons why your chest is not growing, explain the physiology behind each, and provide proven fixes supported by scientific research.

1. You’re Not Training Through a Full Range of Motion

The Science Behind Range of Motion

Research consistently shows that using a full range of motion (ROM) during resistance training stimulates more muscle growth than partial reps. A st

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