How to Train

Adjusting the EMST150™ Expiratory Muscle Strength Trainer for First Time Use   Please use these instructions of how to use the EMST150™ Expiratory Muscle Strength Trainer. To make it more difficult to blow air out through the valve, tighten the EMST150™ trainer’s spring by rotating the knob to the right. To loosen the spring and … Continue reading How to Train