We all talk a lot about the mind over the body and emotions, so you can act stoicly regardless of your internal experience and how your body feels, and it's all fine, but it's important to make a point that your mood is more dependent on your body health than you think at first. How depressed you are can for instance be linked to the last time you went to the loo and how great your turds look (https://www.frontiersin.org/journals/psychiatry/articles/10....)

So take care of your mind, but also take care of your body. Don't be treating your body like crap and expect you can only will yourself into acting better.