Inclusion Criteria:  Men and women between 60 and 85 years old Naïve to Tai-Chi practice (never practiced TC) Montreal Cognitive Assessment (MoCA) score between 17 and 13. Self-reported ability to walk continuously for 15 minutes without an assistive device Working email address Prior experience with and current access to a computer, smart phone or tablet device  Exclusion Criteria:  Chronic neuromuscular conditions (e.g. Parkinson's disease, multiple sclerosis, stroke) Acute medical conditions requiring hospitalization within the past 6 months or that could interfere with safely participating in the study Active cancer Significant musculoskeletal conditions requiring chronic use of pain medication Significant cognitive impairment (Diagnosed with dementia (self-reported), or Montreal Cognitive Assessment (MoCA)-Blind score < 13)