We both do yearly check-ups at the doc with typical blood tests (lipids, CBC, etc). I do dental visits 2x a year and the Mrs 3x (needs a shorter cleaning cycle than me). I brush 2x a day and use a water-pik daily before bed and the Mrs brushes 1-2x daily, uses an ultra-sonic toothbrush and flosses daily.
I take Saw Palmetto for prostate health and a daily multivitamin, and we both take Tumeric to minimize inflamation. The Mrs has a few prescription meds she's on and does extra Calcium/vitamin D. I take no prescription meds at this point in time.
With both exercise and diet, sustainability is what we strive for. I have some variations of basic sit-ups and push-ups I do 3x a week to keep my core tone. I can do these just about anywhere and at any time. We have recently started going on ebike rides, which is more of a workout than one might think. It's fun, so hopefully wiill be sustainable.
I have done intermittant fasting for at least a year or more now, because it works very well with when and how I like to eat. I usually eat my first meal at noon or beyond and then try to limit my eating to an 8 - 9 hr window after that, which is pretty easy for me, but the Mrs could never do that. Everyone is different.
For the past month+, I've done a clear liquid only day on Wednesdays. This cuts out about 10K calories a month from my diet. I was sick of my weight slowly rising and have since turned that around. I started this at just over 230 lbs and am down to just under 220 now, and would like to get to 200.
We both try to watch and limit our intake of simple carbs. An interesting concept we've seen lately is something called "5 to 1 foods". This is where you take the total carbs over the fiber and try to get that to be 5:1 or lower. My wife has found bread that falls into that range and my go-to snack is popcorn.
Both of us have recently tried to become more aware of our total daily calorie intake and mostly stay within the suggested calorie maximum for weight maintenance, and preferably lower. We actively look for and eat healthier food alternatives. For example, if you have never looked at tofu based noodles as a substitute for pasta, it's worth a look.
From a mental health perspective, we try not to ever bottle things up and tend to get things off our chest. We also try to keep a postive outlook, and limit/eliminate exposure to negative people. We all have our peeves and flaws, but we try not to focus or dwell on them. Our very simple goal in life is to have fun, and being around negative people is generally not fun.

