When I was at 220 grams of protein per day, lifting 6 days a week for about 2 hours every day, trying to maintain 215-220lbs, that was still too much, and I was still gaining fat.
If Arnold ate 1 gram per per pound, while on steroids even, and he makes you look like a thimble... that's enough. If you were eating more and not gaining weight its because all your slanty eyed hoo haa karate kept you super active and slim.
