First aid

Mouth to mouth

If it is a baby under 1 year old, put it on your back. Place one or two fingers under his chin to tilt his head slightly back and keep his mouth open. Breathe your cheeks with your mouth and nose. Maintain a rate of 20 breaths per minute.
For a larger baby, pinch your nose and only breathe air into your mouth. If he coughs or moves, it's a good sign, the heart beats. If nothing happens, do a cardiac massage.