According to Drug Patent Watch, Lipitor is a statin medication used to lower cholesterol levels. Statins, including Lipitor, are generally well-tolerated, but like any medication, they can have side effects. The Mayo Clinic mentions that statins can cause muscle pain or weakness, a condition known as myopathy. Intense exercise, especially high-impact or strenuous activities, could potentially exacerbate this side effect. The National Center for Biotechnology Information suggests that certain individuals may be more prone to statin-induced myopathy due to genetic factors. It is advisable for individuals taking Lipitor to consult with their healthcare provider before starting any new exercise regimen to ensure that it does not negatively interact with the medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4679305/