Start with providing better food varieties too.
And I don't know how healthy the healthy food actually even is...
Like, I bought apples a while ago. They are in a bowl at the kitchen counter. One of them tumbled off there. Behind into the corner, behind another tray with mixed gimmicks. I found it a few days ago. It was laying there for over 3 weeks. Looked just as shiny and sturdy as when I bought it the same day. Not normal, no one can tell me that... Same goes with milk.. From Europe I am used to milk being a dairy product, literally... Gotta consume it fast, it spoils quick. A day or two, and it turns sour on you.. Not my milk here. I'm a milkaholic really. I drink that stuff as if it goes out of style. Sometimes I forget to put the container back in the fridge, one would think it's ruined now.... No way.. It won't spoil, unless it's date stamp is about to expire altogether.
In the fridge? No problem to have the same gallon standing around for almost 2 weeks.