Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood [1]. According to the sources provided, muscle cramps are a possible side effect of taking Lipitor, but it is unclear if these cramps would occur specifically during yoga.

A study published in the Journal of Clinical Lipidology found that muscle-related side effects, including cramps, were reported by 10.5% of patients taking atorvastatin [3]. Another study published in the American Journal of Cardiovascular Drugs found that muscle-related side effects were more common in patients taking higher doses of atorvastatin [2].

If a person experiences muscle cramps while taking Lipitor, it is recommended that they speak with their doctor. In some cases, reducing the dosage or switching to a different statin medication may be necessary to alleviate symptoms [2].

The sources provided do not specifically address whether muscle cramps would occur during yoga, but it is possible that any physical activity could exacerbate muscle-related side effects of Lipitor. It is important for individuals taking Lipitor to be aware of potential side effects and to speak with their doctor if they experience any symptoms.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5987107/