...No not the ones during birth.
I know this answer may vary based on individual physiology and experience.
I was curious as to how many contractions (diaphragm) movements you guys practicing aspetto (waiting on the bottom) go through before you think it's time to surface. Also, what's going through your mind during these contractions? One of my friends tends to count his contractions as a way to "fight" it.
I tend to go through at least 2-3 depending on the depth before I start to head up for the surface.
Thanks and dive safe!