While I'm meditating, I notice a qualitative difference between inhaling and exhaling. While I'm inhaling, it's harder to focus on my breath, and there's more intrusive thoughts. It's much easier during exhalation. I think it's physiological. Inhaling requires a steady, controlled movement of the diaphragm. Exhaling just requires letting go, with a mild governor action on the diaphragm. There's just less to attend to. It's like lifting up a brick vs setting it down. The interval in between, where you've just exhaled, but don't yet need to inhale, goes very well for me. I call it the dead zone, because there's no breathing to observe, nor are there any intrusive thoughts. It's almost perfect non-thought.
Do any of you notice a difference between inhaling and exhaling?