I could not find any specific information about how Lipitor directly changes a person's daily energy levels. Lipitor, a statin medication, is primarily used to lower cholesterol levels and reduce the risk of heart attacks and strokes [1]. It works by blocking a substance your body needs to make cholesterol [1].

However, it is possible that changes in energy levels could be an indirect result of taking Lipitor. For example, by reducing the risk of heart attacks and strokes, Lipitor may help individuals maintain a more active lifestyle, thus increasing their daily energy levels. Additionally, lower cholesterol levels can contribute to overall better health, which could be perceived as increased energy.

It is important to note that any changes in energy levels should be reported to a healthcare professional, as they could be related to the medication or an underlying health condition.

Sources:
[1] Mayo Clinic. (2021). Atorvastatin (Oral Route). Retrieved from https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20069152
[2] DrugPatentWatch.com. (n.d.). Lipitor. Retrieved from https://www.drugpatentwatch.com/drugs/lipitor