Effect of Heart Yoga Applıed To Patıents Undergoıng Cardıovascular Surgery on Sleep, Depressıon And Qualıty of Lıfe

This type of study is a randomized controlled trial. The aim is to contribute to the literature by comparing the effects of heart yoga on the depression level, sleep and quality of life of patients who do and do not do heart yoga. The main elements it aims to answer are: * Heart yoga applied to patients who have undergone heart surgery improves their sleep quality compared to those who have not. * Heart yoga applied to patients who have undergone heart surgery reduces the level of depression compared to those who have not. * Heart yoga applied to patients who have undergone heart surgery increases the quality of life compared to those who have not. Patients who accept the study will practice heart yoga simultaneously with heart yoga videos via an online link every other day for 12 weeks after heart surgery. Researchers will compare intervention and control groups to see if there are any effects on sleep quality, depression level, and quality of life.