Got my bottle yesterday just mixed my first serving in a. 3 scoops with 6 oz of water and shook.
the pressure that was made was ridiculous. when i opened it made a huge pop and i got jacked in the face. my eyes kinda burn but besides that i feel pretty good. can't wait to lift.
moral of the story... don't shake it. if you do, point the opening at a wall or someone you don't like.