There is no evidence to suggest that Lipitor, a medication used to lower cholesterol levels, can interfere with yoga breathing techniques. Lipitor's active ingredient, atorvastatin, works by blocking an enzyme in the liver that is responsible for producing cholesterol [1]. Yoga breathing techniques, on the other hand, are a form of meditation that involve controlled breathing to promote relaxation and reduce stress [2]. While yoga has been shown to have various health benefits, including reducing the frequency and intensity of migraines [3], there is no evidence to suggest that Lipitor would interfere with these benefits. Therefore, it is safe to practice yoga breathing techniques while taking Lipitor. However, as with any exercise or medication, it is important to consult with a healthcare provider before starting a new regimen [2].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3415184/
[3] https://www.reuters.com/article/health-yoga-migraine-dc/gentle-yoga-may-aid-migraine-sufferers-idUKCOL66234620070516