I have Chronic Lymphocytic Leukemia, for which I am on a continuing daily dose of a targeted therapy (Imbruvica). One side effect of this drug is muscle spasms, which get me up and jumping around 3-4 times a night. Before this cancer I had several brain surgeries for an unrelated tumor, and those left me with serious balance issues. So I'm looking to improve my balance, fight fatigue, and improve strength.