Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood. According to the sources provided, there is no information suggesting that Lipitor should be taken before exercise. However, it is important to note that Lipitor may cause side effects such as muscle pain and weakness, which could potentially affect one's ability to exercise [2]. It is recommended to speak with a healthcare provider before starting any exercise program while taking Lipitor or any other medication [3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details