I'm going insane trying to get the "middle of the road" ending, lol...
I read the diet book, so I'm trying to eat sugary but make sure I work out, and it's just giving me the letting yourself go route.
I got it once to say something along the lines of "My tummy hurts, but my muscles also hurt from my work out" when I went to sleep one night, which made me think I was on the right track, so I tried repeating it and apparently wound back up on the letting yourself go route again. Feel like I'm going insane!
Game is good though, obviously I'm enjoying it if I'm focused on figuring this out, but for now I'm very stumped.