Resistance training and endurance training each have distinct effects on the body. Resistance training primarily builds muscle strength and mass by challenging muscles against an opposing force, which leads to increased muscle hypertrophy and improved metabolism. In contrast, endurance training, such as running or cycling, enhances cardiovascular fitness, increases stamina, and promotes efficient oxygen utilization. Both types of training contribute to overall fitness, but incorporating a mix allows individuals to achieve balanced physical performance and better health outcomes.