• A foreign body can be pieces of food, bone, any other solid or liquid. 
• The substance may enter into the windpipe. 
  
• Do not try to hook the foreign body out with your fingers; this may push it further down.
  

The first aid measures for choking are as follows:

• For babies and small children, hold the baby upside down and smack (cuff) him firmly b/n his shoulder blades.
• For children, lie the child face down over your knee or arm and smack them sharply between their shoulder blades.
• For adults, stand behind  and grasp them around the chest just under the chest bone (Sternum). Give a sharp bear hug.