You and me following group demonstrating yoga position (5)
I believe the answer is:
lotus
'yoga position' is the definition.
(lotus position from yoga)
'you and me following group' is the wordplay.
'you and me' becomes 'us' (the two of us).
'following' means one lot of letters go next to another.
'group' becomes 'lot'.
'us' after 'lot' is 'LOTUS'.
'demonstrating' is the link.
(Other definitions for lotus that I've seen before include "Mythical plant inducing languor" , "Mythical fruit including stste of dreaminess" , "Large water lily" , "One of the lilies" , "Sacred waterlily" .)