Physically demanding - Wrestling! is by far the worst discipline to begin with, its just horrendous
It depends on your Mrs mindset, if she likes being hit, and some of us do
, she'll find comfort in stand up, if she likes confined spaces and being choked she'll find comfort n JJ
, that actually sounds pretty funny sorry mate!
My advice, begin with grappling of some sort but do not overlook striking, its very very easy to become too comfortable on the ground