That is all Poser is about; To Pose :-)

Do you say; I am going to cook dinner? And then drive off to Mc Donalds? :-)
Sorry, internal joke.

Yes, a mirror is your friend.
Look at the bends and twist of your body, or from your model if you have one.
Girlfriend? Wife? Sister?

Ps leaving IK On for the feet would perhaps work for the left foot.
The right foot will fly-off when lowering or Z rotating the hip as is;

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!