I was with a friend this evening in my house , we were eating gova while watching mancity match,all of a sudden he started choking, I was total confused on what to do,I even spoke in tongue while praying despite that I hardly attend church, he was struggling with his breathing while I was running up and down looking for what to do,this thing lasted for about 40 seconds, he suddenly cough and regain his normal breathing, he said the piece of gova entered his wind pipe, please what's the best thing to do when you get choked by a piece of food that entered your wind pipe?