How do you put people to sleep without them knowing it?

Have them take 10 breaths and on there 11 one hold it. what you do is cup your hands and grip both sides beside the windpipe and squeeze lightly until they go out. Ive do it to 5 different people. Note if they don't feel dizzy your not doing it right do not let them release there breath. they will breath in there sleep. they will be out for 10 to 20 seconds. it all depend how many deep breaths they take.