Choking is when someone is having a very hard time breathing because food, a toy, or other object is blocking the throat or windpipe (airway).

A choking person's airway may be blocked so that not enough oxygen reaches the lungs. Without oxygen, brain damage can occur in as little as 4 to 6 minutes. Rapid first aid for choking can save a person's life.

Abdominal thrusts is an emergency technique to help clear someone's airway.