What is the recommended heart rate range during exercise for improving cardiovascular fitness?

The recommended heart rate range during exercise for improving cardiovascular fitness is 50% to 85% of maximum heart rate. This range is considered optimal for enhancing cardiovascular health because exercising within this level strengthens the heart and promotes better circulation.

By maintaining the heart rate within this range, individuals can effectively improve their aerobic capacity and endurance. This intensity ensures that the workout is challenging enough to elicit improvements in cardiovascular fitness without being so strenuous that it risks injury or excessive fatigue. The lower end of this range (50%) helps beginners ease into exercise, while the upper end (85%) pushes more experienced individuals to reach their fitness goals.

In contrast, other ranges provided are either too low or too broad to effectively target cardiovascular improvement. Ranges lower than 50% of maximum heart rate typically do not provide sufficient stimulus for enhancing cardiovascular fitness, while a range extending to 100% may lead to unsustainable efforts for most individuals without a high risk of overexertion.