1Improve Throat Muscle Strength: The portable inspiratory muscle trainer helps enhance muscle strength by targeting the throat muscles that require greater power. 2Enhance Respiratory Strength and Control: Train your anaerobic threshold to push your limits, increase oxygen intake, and sustain endurance. Strengthen respiratory strength and control for improved performance. 3Maximize Exercise Records: By stimulating your breathing work and blood flow and circulation, maximize your exercise records and performance to reach new levels. 4Breathing Technique Guidance: Inhale slowly and deeply through the mouth, hold your breath for a few seconds, exhale slowly through the mouth until nearly fully exhaled. Remove the device from your mouth and breathe normally until ready to repeat the exercise. 5Material Quality: Constructed with silicone and ABS materials, the breathing trainer is durable and suitable for a wide range of users including adults, seniors, children, swimmers, athletes, and singers.