i love reading about people's 40+... i think i tried to do that with one piece, when i started... i think i did eps 15-40, but i was dead after that and i couldn't watch more than 2 eps per sitting after that. plus i couldnt enjoy the last 8 because i was fallasleep/ my legs were dead and i was worried about a DVT (deep vein thrombus- read about it, it kills).
at my school's anime club we did a 14ep evangelion marathon... that was heavy and felt like 2 days worth of anime