Real talk, a good workout 5 days a week will have a noticable impact on your body by the 30 day mark.

I went from literally struggling to lift 50 lbs to being able to do my first full pullup of my life (and immediately after I did a second one to make sure the first one wasn't a fluke) with just 1 month of daily exercise. I also started to feel noticably healthier and felt my body start asking for healthier foods. It actually got kinda finny one time I heated up a steamer bag of veggies because I just wanted a big plate of veggies, then my mouth was going "eww I still hate cauliflower" while my stomach was going "YES GIVE ME THE CAULIFLOWER"

I was following this guide which was extremely helpful in that it explained the terminology, provided different levels for each excercise so you start with what you can do rather than fighting a pushup or pullup that you can't do, and provides clear points where you "level up" and can move up to the next level for the excercise. Nice part is, it's all pushups and leg raises and such, so you just need a patch of floor somewhere to do it

Anyways my tired brain isn't making a fully coherent post, but point is, more people should try excercise because it's really cool!