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As someone who has integrated swimming with targeted strength training, I've experienced remarkable improvements in muscle tone and abdominal definition. Swimming alone offers excellent cardiovascular benefits and full-body engagement, but combining it with gym workouts focusing on muscle building, such as weightlifting or resistance training, accelerates fat loss and sculpts muscles more effectively. From personal experience, prioritizing core exercises like planks, leg raises, and Russian twists alongside swimming sessions helped me develop sharper abdominal muscles. Additionally, incorporating compound movements such as squats and deadlifts boosted overall muscle mass and enhanced my swimming power. For sports students aiming to build a lean yet muscular physique — often referred to as '脂包肌' or lean mass with minimal fat — balancing swimming routines with gym workouts is key. Maintaining a protein-rich diet supports muscle recovery, and tracking progress with photos or measurements keeps motivation high. Ultimately, the synergy of swimming's endurance training and muscular strength sessions produces a well-rounded athletic body, increased stamina, and the coveted toned muscles and abs many athletes strive for.