This two-arm randomized trial will provide digital cognitive behavioral therapy for insomnia (CBT-I) to all participants and passive body heating (PBH) sessions using a sauna blanket to half of participants over a 9-week treatment period. Participants are adults aged 18 years or older with insomnia disorder.
18 years or older
English-speaking
Willing to use birth control if assigned female sex at birth
Willing to receive study text messages during participation
Night shift or swing shift worker
Current or planned routine body heating practices (e.g., saunas, hot tubs, long baths) within 4 hours before bed that are 10 minutes or more in duration (≥2x per week)
Pregnant or plans to become pregnant during the participation period
Traveling internationally between screening assessment and anticipated post-intervention assessment, or during anticipated post-follow-up assessment period (~1 week)
University of California, San Francisco
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
Collaborator