What is the primary benefit of high-intensity interval training (HIIT)?

High-Intensity Interval Training (HIIT) primarily focuses on improving cardiovascular fitness through alternating periods of intense effort and active recovery or rest. This form of training elevates the heart rate significantly during the intense intervals, leading to enhanced aerobic and anaerobic conditioning. The short bursts of high effort boost oxygen uptake and can improve overall endurance, making the heart and lungs more efficient.

While other benefits, such as improved muscle mass and mental focus, can be associated with HIIT, the most notable advantage is the substantial enhancement of cardiovascular fitness. Engaging in HIIT can lead to better performance in both endurance activities and overall heart health, making it a highly effective training modality for those looking to improve their cardiovascular capabilities.