High-intensity interval training (HIIT) workouts are particularly beneficial for improving endurance. These workouts alternate between short bursts of intense activity and brief recovery periods, effectively challenging both the aerobic and anaerobic systems. HIIT can improve cardiovascular fitness and increase metabolic rate, making it efficient for those seeking to enhance their endurance levels in a shorter time frame. This training method can be adapted to various exercises, such as running, cycling, or strength training, allowing individuals to tailor their workouts to their fitness levels and preferences.