The new model Mary is at home in a training session. She suddenly feels a pain in her chest, but she continues to exercise. After a short time, her pain becomes stronger and her breathing becomes labored. She sits on the ground and touching her chest. Her breathing becomes more and more labored and she eventually stays still. Rescuers enter the room and begin resuscitation maneuvers. The compressions are deep and the AMBU bagging continues. After several cycles Mary does not recover, so one of the rescuers takes the defibrillator. Her chest is uncovered and the discharges alternate with compressions and stuffings. After many cycles of CPR and several shocks with the defibrillator, Mary recovers. Deep compressions, AMBU, long resuscitation scenes, strong responses to defibrillation. Different camera angles. Topless only