Knowledge Base > FAQ > General Support > My PowerLung model does not seem to work because I can’t get any air through it.

in FAQGeneral Support

When a new or existing PowerLung model is too difficult to use or you think there may be a problem with it because you cannot get any air through it, this is generally the result of choosing a PowerLung that is too difficult for your current level of breathing. For example, if you purchased a PowerLung Sport model so you could “grow into it” but you are really involved in low or moderate level cardio or impact exercise, you may experience difficulty using the PowerLung Sport model.

If this happens, you can visit our Which Do I Choose Chart and find the right level of resistance for you and purchase only PowerLung Resistance Cells Set that give you the best training directly at the PowerLung Online Store.