Getting aware of your body should be your utmost health goal.
Once u did that u unlock the automated system of following healthy habits.
How to do that?
Run a kilometre - u got to know ur physically unfit.
Sit to meditate for 5 min - u got to know
U r a first time entrepreneur building a new gen product. Halfway, u start developing serious PMF doubts. U research & realise it's a bet. Now what should one do!?
If u feel stuck on ur business idea, model or the PMF concerns. I would highly recommend u to create a serious pitch deck that u would have to pitch investors. I am sure this might help u eradicate most of ur doubts.