Numerous studies have shown that respiratory muscle training () can significantly improve respiratory muscle function in patients with respiratory diseases. It has also been used in sports training, vocal training, medical treatment, and sports rehabilitation. Assisted pulmonary rehabilitation training improves cardiopulmonary function, allowing mouth-to-mouth breathing to maximize respiratory muscle development. Exhalation training can be done through the nose and mouth, combined with abdominal breathing exercises, to strengthen core muscles and help achieve abs. Use effective yoga/Pilates equipment with adjustable resistance settings. Practice daily, focusing on breathing slowly and deeply, and feeling the contraction and relaxation of the diaphragm. This quickly improve your breathing efficiency and help you overcome long-standing neck problems. Simulated altitude training can help break through athletic bottlenecks. Many professional athletes also incorporate breathing exercises into their routines to comprehensively enhance their fitness and performance. Hign-concerned Chemical:None Type:Hand Tool Parts Applications: Running, Fitness Equipment, Fitness, Cycling Material: PP Color: Package Contents: 1 * Breathing Trainer 1 * Nose Clip 1 * Storage Box 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.