Your body feels stiff,especially after sitting for more than an hour.
because when you have food it streches
Your groin is being stretched.
I would guess that anything "stretchy" will fit looser if it was very tight after a lot of wear!
In the muscle that is being streached...point to it then have the client take a deep breath and tell them they should feel the streach here ( point to the location of the muscle being streached.)...