Created specifically for people who want to experience enhanced breathing and swallowing, the EMST150^™expiratory muscle strength trainer is the first of its kind. This calibrated expiratory muscle strength trainer was designed by physiologists who recognised the value in offering individuals a means to train muscles specific to their activities, and also to track their progress over a period of time. There is NO machine at the gym that can accomplish this for you. If you’re in need of improving the force production or endurance of your breathing, the EMST150^™ can do that for you simply and efficiently.