After analyzing the sources provided, there is no clear indication that Lipitor affects yoga poses. Lipitor is a medication used to lower cholesterol levels in the body, and its active ingredient is atorvastatin calcium [1]. However, there is no evidence that suggests that Lipitor or atorvastatin calcium has any direct impact on yoga poses.

The sources provided do offer information about yoga and its potential benefits. According to a study reported by Reuters, gentle yoga may aid migraine sufferers [2]. Additionally, the Everyday Health website offers tips and advice on yoga poses for beginners [3]. However, there is no mention of Lipitor or any other medication affecting yoga poses in either of these sources.

In conclusion, there is no evidence to suggest that Lipitor affects yoga poses. While yoga may offer various benefits, including potentially aiding migraine sufferers and improving flexibility, it is not impacted by the use of Lipitor or atorvastatin calcium.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.reuters.com/article/health-yoga-migraine-dc/gentle-yoga-may-aid-migraine-sufferers-idUKCOL66234620070516
[3] https://www.everydayhealth.com/fitness-pictures/yoga-poses-for-beginners.aspx