Saitama mentioned that he got this strong through daily training, which consisted of 100 push-ups, 100 sit-ups and 100 squats along with running 10 km every single day. Also, he ate three meals a day, but only a banana as breakfast and also didn't use the AC, to strengthen his mental resistance.
Has he stopped his training and accepted his current power level as sufficient? Or does he still train using his methodology? (I've read till Vol 6, Chapter 32 and haven't found anything about his current training status)