Online Tai Chi Plus Fitbit After ACS (Mind2Move)

Inclusion Criteria: History of ACS (unstable angina, NSTEMI, and STEMI, defined per current AHA/ACC criteria); Age ≥ 18; Being physically inactive (i.e., < 150 min/week of moderate-intensity aerobic PA); Absence of contraindications to physical exercise per the participant's provider evaluation; Access to a digital device with internet connection; Having an active email account and ability to check email at least weekly; Physician clearance to participate in low-moderate intensity exercise (tai chi), including a statement that there is no contraindication to exercise based on post-ACS stress test and other factors, as appropriate; English speaking Exclusion Criteria: Inability or unwillingness to give informed consent; Blood pressure >200/110 or orthostatic systolic blood pressure decrease >20 mmHg at the baseline visit; Uncontrolled/untreated atrial or ventricular arrhythmias or 3rd degree AV block; Within 3 months of a diagnosis of pericarditis or myocarditis; Medical conditions likely to limit lifespan to less than one year; New York Heart Association (NYHA) functional class IV; Severe cognitive impairment (BOMC >10);139 Orthopedic problems prohibiting TC practice; Ongoing TC or other mind-body training (i.e., meditation, TC, or yoga) at least weekly; Current enrollment in cardiac rehabilitation; Untreated severe depression (PHQ>=20); Conditions likely to affect study compliance (i.e., moving out of study area, substance use, ongoing untreated psychosis); Symptoms of unstable cardiovascular disease (e.g., shortness of breath or chest pain at rest and/or Canadian Cardiovascular Society Angina Class III-IV)