I always do that too, and not just before a poker game. Meditation or just sitting in silence.I actually try to clear my mind and relax as much as possible. The less stressed I am, the better the decisions I typically end up making. So yeah... deep breathes and relax!
I wonder how you guys are getting ready for poker? I like everything at my fingertips.My coffee, juice, phone…. Or do you have other habits?