Inclusion Criteria:  Completed treatment for a cancer diagnosis within 5 years of enrollment Access to mobile device or computer Basic computer or mobile device skills Experience a significant level of fatigue defined as >= 4 on 0-10 scale using the One-item Fatigue Scale.  Exclusion Criteria:  Currently undergoing chemotherapy or radiation treatment Unwilling to participate in an exercise program Have metastatic cancer (Stage 4) Do not have physician consent to participate in the exercise program Unable to follow verbal or written assessment instructions Non-English speaking.