Our breathing exercise is modeled after the relaxing and slow breathing exercises used in Yoga and Tai Chi.  Our exercise promotes relaxation and proper breathing technique, but with the addition of adjustable resistance to strengthen your lungs.  It is a slow and continuous flowing breathing resistance exercise,  inhaling and exhaling through the comfortable mouthpiece.  This is by far a more complete and  effective breathing exercise than the one provided by threshold machines that separate and isolate inhaling from exhaling during the exercise.