This action/crunch gesture works by measuring the difference of change in time from given a joint* of your choice  (therefore needs getSkeletons to work). 

*Usually using  “spinecenter” as it is the one which offers better stability.

We are going to create a simple application which changes the text on the screen when the action is triggered.

In order to trigger the function from Javascript we are going to create a message called “msg” in the HTML code, this by default is set to show on the top left of  the screen the text ‘Awaiting squat/crunch to be triggered!’ and will change when the action is captured by the sensors.