Inclusion Criteria:  Patients with histologically confirmed head and neck squamous cell carcinoma who have a CRT treatment scheduled at Roswell Park Age >= 18 years of age Able to read, comprehend and speak the English language Willing to wear a wristwatch (actiwatch) and complete the sleep log to monitor sleep and activity for three weeks (Week 1, 3, and 6) during CRT Willing to wear the ApneaLink Air at-home sleep monitor for one night at baseline (pre-CRT) Participant must understand the investigational nature of this study and sign an Independent Ethics Committee/Institutional Review Board approved written informed consent form prior to receiving any study related procedure Willing to provide biospecimen samples (saliva, cheek cells, and blood) twice during CRT (week 1 and week 4) and optional for week 6 ADDITIONAL INTERVENTIONAL STUDY CRITERIA Insomnia Severity Index (ISI) total score >= 7 Willing to complete a course of Brief Behavioral Therapy for Insomnia (BBT-CI) during the treatment weeks  Exclusion Criteria:  Participant does not meet the overall Inclusion Criteria for this study Patients who developed severe oral mucositis with World Health Organization Scale III or above with ulcers on the cheeks ADDITIONAL INTERVENTION STUDY (BBT-CI): Currently receiving treatment for insomnia or other sleep disorders ADDITIONAL INTERVENTION STUDY (BBT-CI): History of severe mental illness ADDITIONAL INTERVENTION STUDY (BBT-CI): Attending behavioral intervention programs for smoking cessation or other substance use disorders ADDITIONAL INTERVENTION STUDY (BBT-CI): Shift workers or persons with a known sleep disorder affecting regular sleep phase initiation (e.g. sleep onset outside the 9 pm- 12 am hours) Unwilling or unable to follow protocol requirements Any condition which in the Investigator's opinion deems the participant an unsuitable candidate for study participation Cognitively impaired adults/adults with impaired decision-making capacity, individuals who are not yet adults (infants, children, and teenagers), pregnant women, and prisoners are all excluded from this study