Having only sat previously for a little over 2 hours for a tattoo, my last session of 5 hours was really tough for me. I didn't move a muscle, but it was frickin' hard. I've watched some of those ANTI videos where Brandon et al are going at it for days on end, long hours, and I can't IMAGINE. Thank God I live less than an hour from the shop so I don't HAVE to endure that!