Bluish Looking Skin Around Head
So i recently have been upping my pumping time gradually and am up to about 30-35 mins mostly at 5hg. I typically start at 4 for about 5mins then will do 20 mins at 5hg then the rest of the time(5 to 10 mins) between 5.5 and 6hg.
I also do probably 5 or 6 what i call power stretches which is where i pump up to 10hg fmto get max stretch then hold for 10 seconds then release down to 5hg. I get good expansion both ways however the outer rim of my head packs the tube pretty quickly after i start and ive noticed the last two times when i get it out of the tube at the end of the session the areas that pack the tube on my head are bluish. Head feels fine but that worries me that maybe im going too long in the tube. Should i take a break in between? I am trying to get to the point where i can stay really long in the tube so maybe every 10 mins or so i need to drop the pressure for 15-20 seconds to let fresh blood in?