Research; it will be carried out Kilis 7 Aralik University Yusuf Serefoglu Health Sciences Faculty, Department of Nursing. The training will take approximately 20 minutes in an empty classroom and will be planned when the students' classes finish. Thus, educational activities in the institution will not be disrupted. Participants will be asked to do the taught exercise in half an hour before going to sleep every evening during the research period (4 weeks). Training will begin when the determined number of samples is reached. The training will be terminated when the 4-week research period determined to see the effect of the application expires.

Inclusion Criteria:

• Volunteer
• Studying in a nursing undergraduate program
• There is no condition that prevents nasal breathing (such as septal deviation)
• No known chronic sleeping disorder

Exclusion Criteria:

• No studying in a nursing undergraduate program
• There is condition that prevents nasal breathing (such as septal deviation)
• Having any chronic sleeping disorder