“…Sleep is defined as an active renewal period that prepares the whole body for life and is vitally important (Guyton & Hall, 2006; Heraghty et al, 2008). Sleep disturbance is defined as the individual's feeling of discomfort due to the disruption of sleep time or the negative impact on their life (Uğurlu et al, 2018). This results in the deterioration of body functions, cardiovascular diseases, diabetes, obesity, anxiety and depression (Cotton & Richdale, 2006).…”