Lipitor is a commonly prescribed medication for high cholesterol and is known to have several side effects. However, there is no evidence to suggest that Lipitor has any specific side effects during Pilates. Lipitor's side effects include muscle pain, weakness, and tenderness, which may be exacerbated by exercise [1]. However, there is no research that specifically links Lipitor's side effects to Pilates.

Pilates is a low-impact exercise that can be beneficial for individuals with ankylosing spondylitis, a type of arthritis that affects the spine [2]. Pilates exercises can help improve flexibility, balance, and posture while also strengthening the muscles around the spine [3].

In conclusion, there is no evidence to suggest that Lipitor has any specific side effects during Pilates. However, individuals taking Lipitor should be aware of its potential side effects, including muscle pain and weakness, which may be exacerbated by exercise. Pilates can be a beneficial exercise for individuals with ankylosing spondylitis, but it is important to consult with a healthcare provider before starting any new exercise program [1][2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4679305/
[3] https://www.everydayhealth.com/hs/ankylosing-spondylitis-treatment-management/pilates-moves/