Feasibility Trial i-Sleep & BioClock Intervention

"The 'i-Sleep \& BioClock' intervention aims at improving sleep and the biological clock among university students. It is incorporates evidence-based techniques such as cognitive behavioural therapy for insomnia (CBTi). The intervention has a duration of 5 weeks and consists of five modules:~1. psychoeducation on insomnia, sleep hygiene and the biological clock,~2. stimulus control and sleep restriction therapy,~3. worrying and relaxation exercises,~4. cognitive therapy to change dysfunctional thoughts about sleep, and~5. summary module, relapse prevention, and plan for the future.~The intervention is supported by e-coaches who give personalized written feedback. Students will fill in a sleep \& light exposure diary daily."