If there is anything that I realized after reading so many (apparent) researches on dietary habits, sleep cycle, exercise, and whatnot is that you are unique and you do what works for you. Most of these are just average(as in expected value) results that are extrapolated out of a superficial survey, which they call study; and some of these are outright bad. Yes, there are general heuristics like being disciplined with your time and effort which if followed can be beneficial, but most of us will have to go through the suffering to discover that; and fwiw, you'll eventually discover that on your as you age and see that your (unrealized) slothfulness, carelessness and temptation is harming you more than you think they are.

I use to work at a seed stage startup, where I had to grind out days together without sleeping and eating, because of which I suffered from severe health issues mostly lifestyle related. I browsed through every blog, every paper, every podcast and youtube videos I could get my hands on --- tried all of them over a period of 2.5 years to a deteriorating health and increased stress. Luckily 2 years ago, I went to a Vipasana silent meditation retreat, where for 10 days you eat on time, sleep on time(9pm), wake up on time(4:30am), and meditate rest of the time. I don't how that retreat itself helped me, but I somehow managed to adhere to that schedule for 2 years now and I feel better than ever.

NB: I don't meditate all day, but I meditate 1 hour every day while also maintain my eating habits and sleeping habits.