Apart from the common measures in patients with obstructive-destructive lung disease, ‘emphysema’2, which includes breathing exercises, a rehabilitation program in addition means training. Training of ‘emphysema’ patients needs a careful selection of the patients and a good insight in the physiological and psychological problems. The risks and limits of these patients are defined and the rules to protect their vulnerable lung parenchyma stated. The benefits of a similar treatment consist of both a better coordination of the breathing act and of breathing with activity. This may result in an important psychological effect. Although, as could be expected because of the permanently damaged lung tissue, no improvement of the lung function pattern as such was found, occasionally a favourable effect on the mechanics of breathing and a more efficient ype of ventilation could clearly be demontrated.