After reviewing the provided sources, there is no direct information regarding whether it is easier or harder to stretch after taking Lipitor. Lipitor is a medication used to lower cholesterol levels in the blood [1]. Restless legs syndrome (RLS) is a disorder that causes an urge to move the legs and can cause discomfort or pain in the legs [2]. One study found that statin use, including Lipitor, was associated with a higher prevalence of RLS in individuals with type 2 diabetes [3]. However, this study did not investigate the relationship between statin use and stretching. It is important to consult with a healthcare provider about any concerns or questions regarding medication use and stretching.

Sources:
[1] DrugPatentWatch. (n.d.). Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] National Institute of Neurological Disorders and Stroke. (2019, September 26). Restless Legs Syndrome Fact Sheet. Retrieved from https://www.ninds.nih.gov/health-information/disorders/restless-legs-syndrome
[3] Lee, J. E., Shin, D. W., Han, K., Kim, D., & Kim, Y. J. (2012). Statin Use and Restless Legs Syndrome in Patients with Type 2 Diabetes. Journal of Clinical Neurology, 8(2), 136–141. doi: 10.3988/jcn.2012.8.2.136. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/