The Calorie Challenge Add-on for Kinect Sports has 10 achievements worth 250 gamerscore.
Defeat the Celery in a quick calorie challenge
Defeat the Banana in a short calorie challenge
Defeat the Milk in a medium calorie challenge
Defeat the Soda in a long calorie challenge
Defeat the Chocolate in a tough calorie challenge
Defeat the Pizza in a maximum calorie challenge
Defeat any 5 calorie rivals within a single day
Beat any calorie rival every day for 5 days in a row
Defeat the Banana and Milk rivals in a single session
Defeat the Pizza and Soda rivals in a single session