I suppose (for a basic starter) you'd look at the kinds of moves used in gymnastic sports such as floor gymnastics, DMT and trampolining. 
Could you imagine performing a "killer" (aptly named!). It's a quadruple twisting, double back somersault. So, you twist (horizontal) 1440 degrees and rotate (vertical) 720 degrees. 
 
Woosh! 
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"'cos you know, it's strange! You stand in a library and go "AAAAARRRRGGGHHHH" and everyone just kinda stares at you, but if you do the same thing on a aeroplane everyone joins in!"