Inclusion Criteria:

• Diagnosed with glioblastoma, gliosarcoma, small cell or large cell glioblastoma, glioblastoma with oligo features, glioblastoma with primitive neuroectodermal tumor-like components (GBM-PNET) features, anaplastic astrocytoma, anaplastic oligodendroglioma, or anaplastic oligoastrocytoma who are clinically stable and have completed radiation therapy (excluding stereotactic radiosurgery) > 21 days and =< 24 months prior to enrollment; NOTE: clinical stability will be defined as a stable or improved Karnofsky performance status (KPS) compared to the prior month
• >= 6 score on the worst fatigue question of the BFI (Brief Fatigue Inventory, question 3); it is not required for the patient to complete the entire BFI to meet this criterion
• Undergone surgery (gross total or subtotal resection) or biopsy and will have been treated with concurrent radiation therapy and chemotherapy as standard of care for glioblastoma, gliosarcoma, small cell or large cell glioblastoma, glioblastoma with oligo features, glioblastoma with primitive neuroectodermal tumor-like components (GBM-PNET) features, anaplastic astrocytoma, anaplastic oligodendroglioma, or anaplastic oligoastrocytoma patients; Note: radiation must be completed, but chemotherapy is allowed; patients who are currently using Optune device will be eligible to participate in this trial
• Negative serum pregnancy test done =< 7 days prior to registration only for women determined to be of childbearing potential by their treating physician
• Ability to complete questionnaire(s) by themselves or with assistance
• Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0, 1, 2 or 3
• Provide informed written consent
• Willing to return to enrolling institution for follow-up (during the Active Monitoring Phase of the study)
• Stable dose of corticosteroid >= 14 days prior to registration