DMSI First impressions + beginner question

[Shannon]

I have just read the list of signs to look for and this remind me that this afternoon at the gym, 3 women were laughing very loudly beside me. It was loud one notch on top of what you would consider normal for me to notice and think, Wow they really want the whole gym to know that they have fun...

Again, it is not enough to conclude anything but still an interesting coincidence...

Women in groups use laughter like this to signal interest and give you an excuse to come see what's up and open them. It's a way of saying, "Hey, I think you're sexy, so notice me, I'm fun and you're invited to talk with me." You'll see this happen more with younger women than older, but most ages of women will do it if they are attracted at the same time. They usually only do it when two or more are interested at the same time.