Cardiovascular endurance and muscular endurance differ in focus and training objectives. Cardiovascular endurance refers to the ability of the heart and lungs to supply oxygen to muscles during sustained activity, often developed through aerobic exercises like running or cycling. It is essential for overall health and performance in endurance sports. In contrast, muscular endurance refers to a muscle's ability to sustain repeated contractions over time, which is crucial for activities like weightlifting or sports requiring high repetitions. Both types of endurance contribute to overall fitness but require different training approaches and methodologies.