Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body [1]. There is no evidence to suggest that Lipitor can hinder breathing exercises. However, some of the side effects of Lipitor can affect breathing. According to the NHS, shortness of breath is a rare side effect of Lipitor [3]. This means that while it is possible for Lipitor to cause shortness of breath, it is not a common occurrence.

A study published in the US National Library of Medicine National Institutes of Health investigated the effect of atorvastatin on respiratory function in patients with asthma. The study concluded that atorvastatin did not have a significant effect on respiratory function in these patients [2].

It is important to note that if you are experiencing shortness of breath or any other unusual symptoms while taking Lipitor, you should contact your doctor immediately. They may need to adjust your dosage or switch you to a different medication.

In summary, there is no evidence to suggest that Lipitor can hinder breathing exercises. However, shortness of breath is a rare side effect of Lipitor and should be reported to your doctor if experienced. A study found that atorvastatin did not have a significant effect on respiratory function in patients with asthma [2].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/
[3] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/