Inclusion Criteria:  Male or female Veterans age 18 years or older. There will be no upper age limit.  The presence of CKD stages 1, 2, or 3, as defined below by Kidney Disease Improving Global Outcomes guidelines, for a period of at least 3 months.  Stage 1: eGFR 90 mL/min/1.73 m2 and spot urine albumin-to-creatinine ratio 30 mg/g. Stage 2: eGFR 60-89 mL/min/1.73 m2 and spot urine albumin-to-creatinine ratio 30 mg/g. Stage 3: eGFR 30-59 mL/min/1.73 m2. Measured blood pressure either >140 mmHg systolic or >90 mmHg diastolic at the two most recent clinic visits. Able to understand and sign informed consent after the nature of the study has been fully explained.  Exclusion Criteria:  Unable to understand or provide informed consent. Unwilling or unable to participate in the protocol or comply with any of its components. CKD stages 4-5, defined as eGFR <30 mL/min/1.73 m2. Receiving chronic hemodialysis or peritoneal dialysis. Recipient of a kidney transplant. Serum potassium <3.5 mEq/L at baseline. Known left ventricular ejection fraction <40% on visual estimate based on chart review of available echocardiogram data. Known hepatic cirrhosis. Major limb amputation. Known pregnancy. Presence of a pacemaker or defibrillator.