Effects of Creatine Supplementation in Breast Cancer Survivors

Inclusion Criteria: * Age 18-75 years of age * Recent (within 6 months) completion of chemotherapy * Willing to attend 3 virtual exercise sessions per week * Able to take oral medications * Participant is willing and able to provide consent to participating in the study * Serum creatinine ≤ 1.5 x ULN or Estimated glomerular filtration rate (eGFR) ≥30 mL/min/1.73 m2 by Chronic Kidney Disease Epidemiology Collaboration equation. Exclusion Criteria: * Physical indications where performing exercise may be limited and/or contraindicated * Poorly-controlled hypertension (blood pressure \> 160/95mmHg) * Current tobacco use (within 6 months) * Anabolic steroids use * Pitting edema * Currently undergoing chemotherapy * History of moderate-severe heart disease (New York Heart Classification greater than grade II) or pulmonary disease (dyspnea on exertion upon climbing one flight of stairs or less; abnormal breath sounds on auscultation). * Pregnant or plan to get pregnant during the study * Recent (within one month) or anticipated treatment with corticosteroids (except for short term use during the time of chemotherapy), androgens, progestational agents, or other appetite stimulants * Serum creatinine \> 1.5 x ULN or Estimated glomerular filtration rate (eGFR) \< 30 mL/min/1.73 m2 by Chronic Kidney Disease Epidemiology Collaboration equation. * Currently taking creatine supplements