One of the meditation techniques they taught at Kripalu was three part breathing. They said that they found the most filling form of breathing was "stomach breathing" which they also said was the way babies tend to breathe. I.e. it's our more natural form of breathing that some people then train themselves out of.
The easiest way to see this is to lay down on your back. Breathe in partially so your stomach inflates. That's part 1. Then breathe in more so your middle chest inflates. Then breathe in a last part so your upper ribs inflate. Then let it all out.
When a person focuses on their breath, and progresses in those three separate stages, it helps the breather focus, calm, and relax.
I've been practicing this since I got back and I do find it quite helpful. It gives me something concrete to focus on, and by focusing on that other issues tend to lose their grip. It also brings deep oxygen into me, which is good for overall health.
Has anyone else tried three part breathing?