The Powerbreathe, $70.00, used twice daily for just four weeks is proven to improve breathing. These versatile and effective inspirators use resistance training to strengthen the muscles around your lungs. Safe and easy to use, they will restore and improve your ability to breathe deeply and easily. The Fitness Inspiratory Muscle Trainer (blue) improves lung capacity. The Wellness Lung Exerciser (green) reduces breathlessness in everyday activities. The Sports Performance (red) helps you push your aerobic capacity to the next level for swimming, running, endurance and high-altitude sports. Powerbreathe has also been known to help with asthma! Strengthening your lungs will help with any kind of physical activity. Check it out!