We aim to enroll subjects eligible to cardiac rehabilitation that are defined as low-risk according to national guidelines. We plan to gradually reduce the number of institution based CR and increase the tele monitored exercise sessions performed in the community. Stress test will be preformed before the intervention and after completing 6 month.

Following the standard rehabilitation intake process (physician visit, nurse intake, exercise physiologist consultation based on stress test and clinical data passed from the physician) all subjects will begin their secondary prevention program including on-site supervised training, nurse case management, plus dietitian and psychological consultation as necessary. During the study weeks subjects will wear the smartwatch (Polar Inc.) in order to collect de-identified data (heart rate, step count, walk speed etc.) and will upload data to the Polar cloud. No medical data will be uploaded and subjects will only have a coded ID randomly generated. During the exercise periods (both on-site in the cardiac rehabilitation institute, and also during the recommended community exercise performed on their own).

Gradually, the number of on-site sessions will decrease from the standard of 8 sessions per month to zero (each month after the first a reduction of 2 sessions). We plan to reduce the on-site sessions while increasing the number of home-based session in order to evaluate the ability to monitor, coach and dynamically adjust the exercise program by combined use of smartwatch data and telephone contact. Polar exercise watch will be provided and appropriate operation instructions and education will be given after informed consent.

During the 6 month study period we will contact subjects once or twice weekly in order to encourage participation, fine-tune the exercise program and to assess secondary prevention goals.

All subjects will undergo a stress test before and after 6 months of training part of the standard of care management, as well as dietitian, physician and psychologist consultations will be offered following the regular schedule of the standard rehabilitation program (at baseline, 3 months and 6 months).

Inclusion Criteria:

• Coronary disease (S/p ACS, PCI, CABG or stable angina with documented coronary disease)
• Age ≥ 21
• Smartphone with internet connection
• Willing and able to comply with study protocol and
• LVEF > 40% and Baseline METS ≥ 5
• Able to follow the personalized exercise prescription, utilize smartwatch and upload exercise data per protocol

Exclusion Criteria:

• Heart failure (clinical) or unresolved significant arrhythmia (i.e. symptomatic atrial fibrillation)
• Significant neurological or cognitive impairment
• Women of child-bearing potential
• Symptomatic hypotension, orthostatic hypotension or repeated blood pressure systolic value <100 mmHg without symptoms
• ACS or percutaneous coronary intervention (PCI) within 30 days prior to screening, or having undergone CABG surgery within 30 days prior to screening
• Inability to perform a CPET test due to physical limitations
• Ischemia per stress test \ nuclear scan or stress echocardiography
• Severe angina pectoris as defined by CCS >2
• Pulmonary disease of severity greater than mild (COPD, Asthma, ILD, CTD with lung involvement) or chronic pulmonary thromboembolic disease (CTED)
• Severe orthopedic limitations
• Active myocarditis, constrictive pericarditis, restrictive or hypertrophic cardiomyopathy
• Moderate or severe Aortic or Mitral stenosis, moderate or severe mitral regurgitation due to primary valvular disease
• Significant anemia (Hb <10 mg/dl)
• Known drug or alcohol dependence or any other factors which will interfere with the study conduct or interpretation of the results or in the opinion of the investigator are not suitable to participate;

Any illness which reduces life expectancy to less than 1 year from screening