Lipitor is a medication used to lower cholesterol levels and reduce the risk of heart disease and stroke [3]. According to the sources provided, there is no direct evidence linking Lipitor to breathing concerns during yoga. However, it is important to note that Lipitor can cause muscle pain and weakness, which may affect physical activity, including yoga [1]. Additionally, individuals with pre-existing respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD) may experience breathing difficulties during exercise, including yoga [2]. Therefore, individuals taking Lipitor who have pre-existing respiratory conditions should consult with their healthcare provider before engaging in physical activity such as yoga. It is important to note that regular exercise, including yoga, can improve cardiovascular health and reduce the risk of heart disease and stroke, particularly in individuals with diabetes [3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3415184/
[3] https://www.niddk.nih.gov/health-information/diabetes/overview/preventing-problems/heart-disease-stroke