Hopefully you will be sitting and relaxing around girls. This is how you behave in that type of environment
2. Sitting/Relaxing. When you are sitting/ leaning or laying. TAKE UP SPACE. As much as you can, aslong as you look relaxed. ex. sitting, lay your arms on the nearby chairs, put your foot on another - this signifies that you are dominant and confident because that space is YOURS (obviously give someone a chair if they need it, dont be a prick). I was once complimented on the way I ate pizza, i was standing , leaning on a counter deeply one arm supporting me, head back , slowly relaxedly feeding myself like a roman back in the day would feed himself grapes. When laying down , spread your legs and your arms and just be as comfortable as possible, drape your arms and legs over chairs/ couches - People notice.