ZoneRunner recognizes zone diet-favorable carbohydrate and fats choices. Since using vegetables and fruits for the main source of your carbohydrates is recommended in the Zone. ZoneRunner rewards you with a happy face when the percentage of you carbs from those sources gets over 50% and an even happier face if over 75%. This retro-70s happy face thing is just an easy way to indicate when you are making the right choices.
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