If the patient has pericardial effusion, it is acceptable to encourage them to participate in outdoor activities, but they should exercise moderately and not too vigorously, especially avoiding strenuous physical workouts. Also, aerobic exercises should be moderate, and they should not spend too long on outdoor activities. Decisions should be made based on the individual's condition. If the condition of heart failure is severe, it is advisable for the patient to rest primarily. Particularly in terms of diet, the intake of sodium should be restricted. Sometimes, excessive intake of sodium can exacerbate symptoms like palpitations, chest tightness, and breathing difficulties. These are serious symptoms that require active management and treatment.