Are hiking and rock climbing activities that help a sim lose weight?

Here's the most complete list of food calories I've been able to find online. Eating 0 calorie food won't make your sim lose weight but it'll keep them from gaining weight. Actively exercising and eating 0 calorie food is the only way to lose weight other than just buying the insta-lean reward trait potion.  Still takes a ton of work to lose the weight though,,,, took my sim about two weeks of working out every morning to slim up.