This is a male dominated culture, and we talk mostly about the specific IOIs that women will display to us. At the same time we talk about how so much of communication is subcommunication like body language and facial expressions. What I have yet to hear be talked about is how we can display proper IOIs to them in terms of body language and subtle gestures.

Standing up straight, leaning back, speaking with a low pitch... these are all passive methods. What are some active things we can do to convey interest or create a "body language dialogue" with the women we want to specifically attract?