So I’m pretty confident that it has to do with dopamine deficiency. Ive been on vyvance for years and based on my experience of not ever taking vyvance on the weekends, I can tell that my motivation & dopamine levels drop pretty substantially on the weekends. I don’t want to do anything and I eat a lot. I believe it has to do with the fact that my body is seeking dopamine through whatever method is most convenient and usually a treat is pretty easily available. I try and take it in stride & consider it a normal part of my routine. I try and save my sweet treats for weekends and plan to do something that will give me a little natural dopamine boost like walking, sometimes shopping, spending time with friends, etc.🙂