Day 2 and just about to do my 3rd OP before I head off to bed.
Both on my morning and afternoon OPs I nearly had to abort them before the 20 minutes were up because a TON of phlegm started to creep up my throat (like just before you're about to cough and hack something up). Fortunately I made it through both and did my best to get most of the mucous up.

I don't smoke nor do I have a cold so SOMETHING's happening :)
I love this!