How long should an aerobic exercise session generally last for effectiveness?

An effective aerobic exercise session typically requires a duration of more than 30 minutes. Engaging in aerobic activities like running, cycling, swimming, or brisk walking for this length of time is crucial for maximizing cardiovascular benefits and improving overall endurance. These extended sessions help to elevate the heart rate and maintain it in the target zone, leading to improved heart and lung capacity, increased stamina, and enhanced calorie burning, which supports weight management and overall fitness.

Duration is key in aerobic training because it allows the body to effectively switch to fat as a primary energy source, especially after the first 20 to 30 minutes of sustained activity. Shorter durations, such as those specified in other options, do not typically provide the same cardiovascular adaptations or endurance benefits. Therefore, aiming for aerobic exercise sessions over 30 minutes plays a vital role in achieving fitness goals and maintaining long-term health.