Segment from original post by Thomer Scheepens:

What I did back then was rapid exhaling and inhaling, inhaling as passive, exhaling and inhaling in a very light way, almost like sniffing, not forcefully as you do with Kapalbhati or Bhastrika, I don't think even all the air goes out of the body with the exhaling, but yet it raised my kundalini back then within minutes.

Suryananda's reaction:

Surprisingly, I noticed a similar breathing pattern with someone who would attend classes when I used to share the practice in that type of format a couple of years ago. He would so easily collapse and so regularly and predictably, eventually he was advised not to stand up for the rooster. I thought to myself this is ridiculous let me see what else could be going on.

So one day, out of curiosity I mimicked this rather light but particular breathing as compared to serious bellows, and surprisingly it worked! Repeatedly there seemed to be a clear difference, therefore I would use it.

I was practicing with RishiDeva some months later, and during the rooster I was doing that breath pattern; he noticed and impatiently directed me to correct and to breathe more forcefully. Of course, I didn’t even think of following up with him about trying some non-sense, the prescribed methodology is to max out, so why would anyone want to hold out?

Reading Thomer’s experience years later I find it interesting. Still, when one is capable of serious bellows this methodology is a waste of time, a beginner's caprice on some variations in how to arouse the life force just withholding bellows or stopping breath can also cause the same.