There is no evidence to suggest that practicing yoga while taking Lipitor (atorvastatin) causes any specific side effects. Lipitor is a commonly prescribed medication used to lower cholesterol levels in the blood [1]. However, some people may experience muscle pain or weakness as a side effect of taking Lipitor [2]. In a study published in the Journal of Clinical Lipidology, researchers found that muscle pain was the most common side effect of statin therapy, including Lipitor, and it occurred in approximately 10% of patients [2]. If you experience muscle pain or weakness while taking Lipitor, it is recommended to speak with your healthcare provider [3]. It is also important to note that yoga can be a helpful activity for managing muscle pain and improving overall flexibility and strength [3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/
[3] https://www.health.harvard.edu/pain/managing-statin-muscle-pain