A couple of years ago a thought occurred to me regarding the connection between blowing your nose and pooping.

We learn at a fairly young age that it is wise to "clench" when we blow our nose, to prevent a possible accident at the other end. Well, I thought, maybe when we are trying to poop, we could assist things by doing the exact opposite. So the next time I was trying to poop, I tried blowing my nose at the exact same time as I was pushing, and it worked.

Anyway, it works for me and I use it all the time now.

NB: The push and the blow have to be at the exact same time.