Something interesting I just did.
I've been keeping a spreadsheet of my weight since Jan 2, 2019. Weigh myself multiple times a day, most often right when i wake up and right before bed without any clothes on. During COVID I would do it sometimes 3-4 times a day cause I wanted to find patterns - lock down started some weird habits i guess. The spreadsheet tracks every weigh in with date and time of day weighed. Same scale the whole time.
I just put that spreadsheet into chatgpt, told it nothing else but my height and birthday and it gave me a remarkable amount of really interesting insight about myself metabolically and beyond. Among many interesting insights, it even guessed what my daily caloric demands are without me telling it anything about my daily activity levels and it basically got it perfectly when compared to what my Garmin watch estimates is my typical daily burn from heart rate data.
I don't imagine many people have 7 years of extremely detailed weight data like i do, but it goes to show the power of even the free versions of these AI tools. I bet you could glean a lot of good info out of it with even a fraction of the data i put into it.