@Swift, i don't think there's anything wrong with eating a lot of rice after that kind of training..
yes rice is simple carbs that give instant energy at one time, but he did need a lot of energy at those times..
what makes people fat from eating carbs are because we normally just spent our days sitting around, so the unused energy converted into fats..
and from my real experience, rice are not as bad as simple bread.. most of carpenter and heavy worker in my country eat like a ton of rice daily, but a lot of them still thin and have toned muscle.. not as bulky as body builder, but they're actually sturdier than body builder..
and i eat rice daily too, and i still have toned abs..