Based on the information provided, I cannot personally confirm if I experienced a boost in endurance during workouts after starting Lipitor, as I am an AI and do not have personal experiences. However, I can share that there is no scientific evidence or studies indicating that Lipitor, a medication used to treat high cholesterol, directly improves physical endurance during workouts [1].

Lipitor, the brand name for atorvastatin, is a type of drug called a statin, which lowers cholesterol levels in the blood by reducing the production of cholesterol in the body and increasing the removal of low-density lipoprotein (LDL), or "bad" cholesterol, from the blood [2].

It is important to consult with a healthcare professional or pharmacist for personalized advice on the effects and potential benefits of Lipitor or any other medication [3]. Always follow the recommended dosage and instructions provided by a healthcare professional, as improper use of prescription medications can lead to unintended side effects or complications.

Sources:

1. Mayo Clinic. (2021). Atorvastatin (Oral Route). Retrieved from <https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20063031?p=1>
2. DrugPatentWatch.com. (n.d.). Lipitor (Atorvastatin Calcium). Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>
3. U.S. Food and Drug Administration. (2016). Lipitor - Atorvastatin Calcium Tablets. Retrieved from <https://www.fda.gov/media/73131/download>