Inclusion Criteria:  Adults aged 18 and older Able to read, speak and consent in English Confirmed treatment with any commercially available or investigational CAR T cell therapy. Internet access via smart phone, tablet, a computer, or another device with the capacity to receive calls, texts, or e-mails, as well as the electronic study assessments. Ability to engage in physical activity as evidenced by an Eastern Cooperative Oncology Group (ECOG) performance status score of less than or equal to 2  Exclusion Criteria:  Individuals who are terminally ill, defined as individuals identified by their physician as likely having 6 months or less to live, or those individuals transitioned to comfort measures only (meaning only supportive care measures without curative focused treatment) Individuals for whom there is documentation of inability to provide consent in the medical record. Non-English speaking/reading individuals.