At its core, progressive resistance training involves systematically increasing the amount of weight you lift over time. This increase in resistance challenges your muscles, compelling them to adapt and grow stronger.

Several hormones play pivotal roles in muscle growth and strength gain. Testosterone, predominantly found in males (but also present in females in smaller quantities), is a potent anabolic hormone that promotes muscle protein synthesis. Growth hormone (GH), secreted by the pituitary gland, stimulates growth, cell reproduction, and regeneration. Insulin-like growth factor 1 (IGF-1), influenced by GH, supports muscle growth and development.