The labels and BMI thing are very Japanese. The concept doesn't come over well culturally. The Japanese get away with being a lot ruder and more insulting when it comes to physical fitness. This game probably could have used more care in the localization.
I'm considering picking this up, but my current schedule at work is ... crazy. I work 12 hour days and work Sun, Mon, Thu, Fri one week and Tues, Wed, Sat the next. This makes getting into any sort of routine, much less an exercise routine, very difficult and on my days off I am so worn down from my lack of sleep and long hours that I am inclined to just vegitate. I really need to get a different job, or at least a different schedule.