Based on the available information, there is no specific evidence that particular exercises can counteract Lipitor's flexibility side effects. Lipitor, a medication used to treat high cholesterol, is a statin that can sometimes cause side effects such as muscle pain or weakness, including reduced flexibility in joints and muscles [3]. However, the sources provided do not include information about exercises that can specifically counteract these side effects.

It is worth noting that regular exercise is generally recommended for people with high cholesterol, as it can help improve cardiovascular health and reduce the risk of heart disease [2][3]. The Mayo Clinic recommends a combination of aerobic exercise and resistance training for people taking statins like Lipitor [1]. Aerobic exercises, such as brisk walking, cycling, or swimming, can help improve cardiovascular fitness and overall health. Resistance training, such as weightlifting or resistance band exercises, can help build muscle strength and endurance.

While these exercises may not directly counteract Lipitor's flexibility side effects, they can help improve overall health and reduce the risk of heart disease, which is often a primary concern for people taking Lipitor. It is always best to consult with a healthcare provider before starting any new exercise program.

Sources:

[1] <https://www.mayoclinic.org/diseases-conditions/arteriosclerosis-atherosclerosis/diagnosis-treatment/drc-20350575>
[2] <https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/>
[3] <https://www.drugpatentwatch.com/p/tradename/LIPITOR>