Inclusion Criteria:  50-75 years of age (women tend to be older at time of diagnosis, with a median age in Canada of 62 years); Completed primary chemotherapy treatment (oral maintenance therapy allowed); Are within one year of completion of primary chemotherapy without known recurrence; Have access to a smartphone, tablet, laptop, or desktop computer with a camera and microphone, and a reliable internet connection; Speak English, to ensure safety in delivery of the physical activity intervention  Exclusion Criteria:  Do not pass pre-exercise screening for safety and do not subsequently provide written medical clearance from their physician to participate; Do not consent to adhere to safety requirements to participate in a virtual delivery program (i.e., be seen on video for duration of class); Experienced a fall requiring medical attention in the prior 6 months as individuals may be a higher risk for fall in a virtual physical activity program setting and would be more appropriate for referral to falls clinic