How to Increase Stamina for Running Interval Training Interval training involves alternating between high-intensity bursts and low-intensity recovery periods. This method can effectively improve running stamina and overall cardiovascular health. Consistency Consistency is key. Gradually increasing your running distance and intensity over time allows your body to adapt and build endurance. How to Increase Stamina for Workout Circuit Training Circuit training combines cardiovascular and ... Stamina refers to the physical and mental ability to sustain effort over extended periods. Whether you’re facing long workdays, intense workouts, or daily responsibilities, building stamina can help you perform better, feel more energetic, and reduce fatigue. Methods of increasing stamina include meditation, exercise, and consuming caffeine. Stamina can help prevent physical fatigue and enhance mental focus. Learn more about boosting stamina here. Fitness experts break down 14 of the absolute best exercises to increase stamina and improve your overall fitness.