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Mask sucking onto face

Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.
It takes quite some control and muscles when doing this.
I find it easy to suck the extending air back from my mask. It works best on long straight ascents after deep dives. Like one small sip of air after every second kick. I know many people who are used to it. You can tell, when you don't see any bubbles leaving the mask when they come up.
Was just reading the blood on lungs thread (which I’ve had before and was told it’s because I look up when ascending) and thought I’d throw this one out there for comment.

after I’ve been diving for say an hour or so, my mask starts being fore billy sucked onto my face. The pressure becomes uncomfortable even at the surface. I take the mask off, blow my nose, add positive pressure, loosened straps on the mask to the point water seeps in. None of it works.
it’s definitely something to do with the sinus or nose/throat just not sure. I take my mask off and put it on and I can feel it sucking back on my face.

Doesn’t effect my dive and I’m mainly only hunting in 15-40ft of water these days. Doesn’t seem to matter the depth. Just seems to be after a certain amount of dive time.

Thought, suggestions, similar experiences?
This happens to me as well. I look at it as a reminder that I am getting tired and need a break. I don't feel tired or want to stop but have learned if I do take a break, get some water and go back in later, I feel better.