It's not a trick shot ..

E demonstrating what I'm unable to do.  This is one of the exercises the physio has asked me to practise to try and loosen up my lower back.  E is able to do a 180 degree rotation, whereas I can only just manage 90 degrees.  You might say E has age on her side, but the physio can manage a180 degree rotation and she is in her 70s.