Re: reverse breathing
i have been sometimes able to make things happen with reverse breathing. I still have to think about it while I am doing it, but I have been able to lift and tip people over with it if I can time my inhale with getting into a good position.
Inhale and pack the breath down into your center - I try to be careful so I don't rupture anything. Then as you exhale, expand outward. The idea I work with is that I my outward breath inflates my body on the way out.
I think the idea here is that the reverse breathing, combined with intention, activates ki. But I have also heard that in other martial paradigms, reverse breathing distorts your partner's sense of where you are and what you are doing by changing subtle queues...someone may be trained to strike as you are inhaling, only to find that you are actually striking them, because you already inhaled.
There are a lot of different types of martial breathing, though, not just reverse breathing. It may not be the solution for all problems.