Hmm ok this is my take on the sliders and I've just been using it for about a month. The top slider I use to judge my overall intake for the day, did I get in all the servings of fruits and veggies, did I limit my sodium intake, etc. The bottom is just straight calories. It's possible to eat just the amount of calories they suggest in a day but it could still be a crappy day, ie you ate only one meal and it was a Burger King value meal. Not sure if that makes sense or even if I understand it correctly.