In this video I demonstrate how to do abdominal churning, which is incredibly health giving for your internal organs, and involves isolation of the rectus abdominis (sometimes called the 'six pack' muscles). It is referred to in hatha yoga as nauli kriya. I expand my chest as if I’m breathing (but not actually breathing). The expansion of the chest creates a partial vacuum that draws my abdominal organs upwards. Then I use the muscles of forced abdominal exhalation (abdominal obliques) and the muscles that are activated when I push my right hip and left hip forward alternatively (rectus abdominis). What I am doing is voluntarily activating the muscles that we all use in breathing and natural movement. The rectus abdominis muscle is meant to be active in many postures including all the way though the positions of the 'salute to the sun', but only if you practice as Sri Pattabhi Jois taught, with lolasana before and after each of the dog poses. The rectus abdominis (the main nauli muscle) will not be active and you will not really have understood ujjayi, bandha or drishti if you can cannot see the navel in the 'downward facing dog pose' and you are not regularly practicing (or at least attempting) lolasana (lifting slowing to a half handstand at the start and end of each vinyasa). The rolling exercise (nauli) that I demonstrate is done as a sequence as follows: (1) push the right hip forward (to activate the right rectus abdominis), (2) push both hips forward (to activate both rectus abdominis), (3) push the left hip forward (to activate the left rectus abdominis), (4) activate the muscles of forced abdominal exhalation (by pretending to exhale fully) to isolate and see the external abdominal obliques, (5) relax the muscles of forced abdominal exhalation (6) repeat steps 1-5 You can get more of this video at blog.yogasynergy.com or come to our intensive training in Goa India from 19 March - 17 April 2016 (yogasynergy.com/training) #yogaeverydamnday #funyoga #nauli #naulikriya #sixpack #rectusabdominis #pranayama #yogasynergy #simonborgolivier #yogaretreat #yogateachertraining #yogaanatomy #yogaphysiology #ashtangavinyasayoga #drishti #bandha