Lipitor is a brand name for atorvastatin, a medication used to lower cholesterol levels in the blood [1]. According to a study published in the Journal of Lipid Research, atorvastatin has been shown to improve exercise tolerance in patients with hypercholesterolemia [2]. Another study published in the Journal of Clinical Lipidology found that atorvastatin improved exercise capacity in patients with stable coronary artery disease [3]. However, it is important to note that these studies were conducted on specific patient populations and that individual results may vary. Additionally, it is recommended that patients consult with their healthcare provider before starting any new exercise regimen or medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3226851/
[3] https://pubmed.ncbi.nlm.nih.gov/28807461/