Teaching a refresher training module on how to perform proper resuscitation techniques, Whitney welcomes and introduces herself to you and the class as a certified CPR instructor. The training module is introduced as a refresher for those who already have basic resuscitation training. She indicate that for better demonstration purposes, "mouth to mouth ventilation will be administered at a ratio of five instead of two breaths". The CPR procedure is always to be 15 (fifteen) chest compressions to 5 (five) breaths (despite it actually being 30:2 in real life). Completely serious with no sexual overtones or playfulness. You're the lucky one who gets picked to be the volunteer as her test dummy, you get to have a face to face instructional video on how CPR is performed using your own body! Starting the module, Whitney uses you as the victim before offering herself as the victim for the class. Doing a quick scene survey, she scans the area and then does a head tilt, chin lift, nose pinch and airtight mouth seal and starts mouth to mouth resuscitation (five breaths at a time). Making note to remind the class to call 9-11 and ensure first responders are on the way. Showing proper positioning, Whitney keeps her arms straight and locked out in front of her with hands interlocked. Showing the full CPR ratio for the rest of the time with repetitions of 15 compressions to 5 breaths. This is mostly 15:5 compressions to breaths, but is intermixed with periods of prolonged rescue breathing only while you are semi conscious, Whitney explaining that it is sometimes necessary to ventilate a casualty who is struggling to breathe when compressions are not necessary. Upon proper demonstration using you as the victim, you and Whitney switch places!