Echoing what other people said, your vices come to get you in your thirties and you have to either decide to give into them, or confront them.

I still struggle with fast food and sitting a lot, but I work out regularly now at 3-4 times a week to counter it, stretch, and now I purposely try to not be sedentary. I walk and bike when I can, avoid endlessly driving or anything else that is just sitting. In the last 18 months there has a been a dramatic improvement to my health with all of my numbers being better than where they were before. I’ve learned that even a modest amount of trying will do an exponential amount of payoff.

Someone said in a comments field “Why should I spend 30 minutes a day sweaty and miserable” (referring to working out). I’ve learned that for myself it’s not about the 30 minutes feeling miserable, it’s the rest of the day where you feel much better. I’m no longer winded going up stairs, I can carry things, I feel like I have some of my endurance from my teenage years back.