One of the key steps in heinrich maneuver is to

FIrst of all You spelled HEIMLICH wrong..
From behind, wrap your arms around the victim's waist.Make a fist and place the thumb side of your fist against the victim's upper abdomen, below the ribcage and above the navel.Grasp your fist with your other hand and press into their upper abdomen with a quick upward thrust. Do not squeeze the ribcage; confine the force of the thrust to your hands.Repeat until object is expelled.

It true it will they want do take care headache, belly pain

1.controls blood flow2.controls oxygen flow3.carries oxygen rich blood to veins