Infrequently... I need to use it more because I still have trouble eating enough food, but I'm still in that "if I don't SEE how low the numbers are I can PRETEND they're not that low!" mode. I get really good about tracking for a week and then I'm like "la la la tracking food sucks" and I stop. I also hate that it automatically adds your exercise calories for you to "eat back." If I were doing lean gains or something, yes, but I'm not... so no please. There's no way to turn that off either. Urgh.