What should you do after about 5 cycles of compressions when you are tired?

After about 5 cycles of chest compressions during CPR, if you are feeling tired, it's important to switch rescuers if possible. You should call for someone to take over the compressions while you provide rescue breaths or assist in another way. If no one is available to help, continue performing compressions until emergency medical services (EMS) arrive or until the person shows signs of recovery. Remember to maintain high-quality compressions, as they are crucial for maintaining blood flow.