Position: Sit relaxed on a chair , with the back supported by a pillow.
Breathe in through the nose. Then purse the lips and pretend like you are blowing through a straw . Blow out twice as long as you breathe in. Gradually increase the time of blowing.
Relax after blowing and take 3 or 4 performed normal breaths before you start the pursed breathing again. These can be done in the morning, up on waking up, and in the evening, before retiring. These may be performed also when short of breath while doing other exercises and and activities.