Board Thread:Questions and Answers/@comment-28925738-20151004181510/@comment-68.97.156.35-20151004182909

in the anime, it mentions that while players were in sao, they were placed in special hospital beds that absorbed all of the excess waste the players excreted in real life. they were fed by IV's inserted into their arms or other parts of their body. and i have no idea about maturing.