Based on the information available, it is advisable to consult with a healthcare professional before starting or changing any exercise regimen, especially when taking a medication like Lipitor. Lipitor, also known as atorvastatin, is a prescription drug used to treat high cholesterol and prevent heart disease [1].

Exercise can have various effects on the body, including changes in heart rate, blood pressure, and metabolism, which can interact with the pharmacological effects of Lipitor [2]. A doctor can provide personalized advice based on your medical history, current health status, and any other medications you may be taking.

Furthermore, the dosage and duration of Lipitor therapy should be determined by a healthcare professional [1]. It is important to follow the recommended dosage and not to stop taking the medication without consulting a doctor, as this could lead to adverse health consequences.

In summary, it is recommended to consult a doctor about Lipitor and exercise due to the potential interactions between the medication and physical activity.

Sources:
[1] DrugPatentWatch.com. (n.d.). Lipitor. Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>
[2] American Heart Association. (2021). Exercise and Cholesterol. Retrieved from <https://www.heart.org/en/healthy-living/fitness/why-is-physical-activity-so-important-for-overall-health/exercise-and-cholesterol>