Physiological decline in the elderly can affect the quality of life of the elderly. These physiological changes can lower the nervous system, which can lead to sleep disturbances and cognitive changes in the elderly. Physiological changes also make some changes to the activity patterns of the elderly. Elderly people tend to experience decreased activities in daily life. Increased physical activity in the form of physical exercise can be one of the interventions given to overcome sleep disorders. This case study aims to implement evidence-based intervention in elderly with insomnia using the Floor Seated Exercise Program. This intervention was carried out seven times with a duration of 30-40 minutes online in the elderly with a nursing diagnosis of insomnia. The results of this intervention indicate that physical exercise can improve the quality of sleep in the elderly, reduce levels of depression and improve cognitive development in the elderly. This increase can be seen with changes in the Geriatric Depression Scale score, the Pisttsburgh Sleep Quality Index and the Mini Mental Status Exam. Nurses can optimize this exercise by monitoring the movements performed in order to get maximum results while still seeing the condition of the elderly.