I started using a local LLM to be my health coach. I'll admit at first it wasn't doing terribly great but I am inclined to think it's doing better. I've played with some initial system prompts a bit, but I think just more information has been the biggest help.
Let's backup a bit. I started using ChatGPT for a bit as a health coach, but didn't love feeding all my personal data to it (I do enough already, I need to find ways of cutting back even more on using it). This led me to using a local model. Like I said it wasn't amazing at first but I think it's getting better. Plus now I save off every message I send and receive, so I can swap models if I want, or I can process the data programmatically.
I use it to help suggest food options, and what to do when I'm not sure what to eat. I tell it about any minor health annoyances (such as heartburn) and this morning asked it for a 20inute workout routine. (Which took me about 25 minutes because I'm not nearly as in shape as I'd like).
I've been trying to figure out as I save off my info, if I can/should be finding ways to tag it so I can maybe separate my questions, but for now it's all integrated.