Functionality: 1. Improve endurance: Using a respiratory trainer can improve respiratory muscle strength and endurance, respiratory muscle fatigue is a limiting factor in exercise, strengthening respiratory muscles can improve limits exercise. 2. Increase Respiratory Force: Improve respiratory force and control performance. Train your anaerobic enlargement and push your limits. Increase your oxygen supply and maintain your stamina. 3. Easy to do: Inhale slowly and as deeply as you can through your mouth and hold your breath for a few seconds. Slowly exhale through your mouth until you are almost completely out of breath. Then repeat the above exercise 10-15 times to complete the set. Do 2-4 sets a day. 4. Lung Capacity: It helps build and improve your lung capacity without the risk of doing a lot of cardio and burning calories. 5. Portable device: The lung breathing trainer is very small and portable. With this device, you can perform your workout routine wherever you are. How to use: Insert the mouthpiece into the mouth, bite the inside of the mouth and fix it in the correct position of the throat and tongue. Inhale and exhale as you adjust The resistance valve selects the level of breathing resistance you want (make it hard, but not uncomfortable). Turn the valve to the left for more resistance (+) and to the right for less (-). Item Type: Breathing Exerciser Material: Silicone, ABS Colour: Black List of packages: 1 Breathing Exerciser

?Multi Usage?It's suitable for various people including athletes, musicians, and average person, also for sports that need higher energetic performances like swimming, athletics running, gymnastics, martial arts, and other outdoor activities requesting higher physical activity. ?Easy to Use?: Inhale slowly and as deeply as possible through your mouth and hold your breath for a few seconds. Slowly exhale through your mouth until you are almost completely out of breath. Then repeat the above exercise 10-15 times to complete the set,Do 2 to 4 sets a day. The valve on our device allows for easy adjustment of breathing resistance. ?Improve endurance?: Using a respiratory trainer can improve respiratory muscle strength and endurance, respiratory muscle fatigue is a limiting factor in exercise, strengthening respiratory muscles can improve breathing limits 'exercise. ?Lung Capacity?: It helps build and improve your lung capacity without risking doing a lot of cardio and burning calories. ?Premium Material?:Our lung exerciser device is made up of super flexible pure silicone material. It helps in comprehensive respiratory muscle training in a wide range of people. The Lung Breathing Trainer is very small and portable.With this device, you can perform your workout routine wherever you are.