Final answer:
When dealing with an unconscious, prone, and not breathing athlete, immediately call for help and start performing CPR to provide crucial life support until professional assistance arrives.
Step-by-step explanation:
When dealing with an unconscious, prone, and not breathing athlete, it is crucial to act quickly to provide them with the necessary care.
The first step is to ensure your own safety and call for emergency medical assistance.
While waiting for professional help to arrive, you should begin CPR (Cardiopulmonary resuscitation) starting with chest compressions.
Compress the chest at a rate of around 100-120 compressions per minute.
To restore breathing, you should open the airway by tilting the head back and lifting the chin.
To provide rescue breaths, pinch the athlete's nose and make a complete seal around their mouth with yours before blowing gently into their lungs.
Repeat chest compressions and rescue breaths until help arrives or signs of life return.