Lipitor is a medication that is used to lower cholesterol levels in the body. It is important to take Lipitor as prescribed by a healthcare provider to get the best results. When it comes to exercise, there is no specific time frame mentioned in the sources provided for how long one should wait after taking Lipitor to exercise. However, it is important to note that Lipitor may cause muscle pain or weakness as a side effect, especially if taken in high doses or for a long time [1]. This may affect one's ability to exercise or perform physical activity. Therefore, it is recommended to consult with a healthcare provider before starting or changing an exercise routine while taking Lipitor. Additionally, it is not recommended to stop taking Lipitor without consulting with a healthcare provider, as this may lead to an increase in cholesterol levels and other health risks [3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/
[3] https://www.unitypoint.org/news-and-articles/can-you-stop-taking-statins-once-you-start