Home-Based Exercise Tele-Rehabilitation After COVID-19

Inclusion Criteria: * Veteran * documented COVID-19 \> 90 days ago * diagnosis of 2 of following conditions: hypertension, diabetes, cardiovascular disease, chronic kidney disease, chronic obstructive pulmonary disease OR 1 condition and BMI \> 30 kg/m2 Exclusion Criteria: * myocardial infarction (within 3 months) * exertional or unstable angina (chest pain that limits activity) * severe congestive heart failure (EF \< 20% in last year or NYHA Classification III or IV) * uncontrolled hypertension (SBP \>180 \&/or DBP \> 110 mm Hg at screening) * screening EKG with ischemia, complex arrhythmia, or high-grade block (per Minnesota Code) * poorly controlled diabetes mellitus (FBS\>200 mg/dl, RBS \> 299 mg/dl, or HbA1C \> 10) * treatment for cancer except skin cancer (within 3 months) * peripheral vascular disease with claudication * severe arthritis limiting ambulation * neurologic disease limiting ambulation (weakness requiring assist device; severe neuropathy) * end stage liver disease (decompensated liver disease) * End stage renal failure (dialysis) * severe pulmonary disease (home O2, admission for dyspnea or pneumonia within 1 month) * high fall risk (history of falls, bone fracture) * dementia (based on Evaluation to Consent) * signs or symptoms of any medical comorbidity that would preclude exercise testing or training * exercises on routine basis (structured aerobic exercise \> 3 time per week)