Still in shape size 12 at 60, despite significant disability/health issues
I typically eat..
Breakfast... black coffee, with 1/2 spoon of sugar
About 9 ish... 1 slice of seeded wholemeal toast with mashed avocado or banana
Lunch ... most likely wholemeal pasta or a seeded bread mature cheese sandwich heavy on the spinach & rocket salad & light on the cheese - you need less with strong cheeses, or tuna or egg salad etc .. I don't eat meat or poultry
Maybe a bit of fruit or vegetable crisps mid afternoon, but I'm not generally hungry, so this isn't everyday
Tea... something like roast fish & vegetables or salad
I generally eat a clean non processed, whole food, pescatarian diet & I don't snack often, because I'm not hungry
I live by a 95% rule in that I don't deny myself anything (bar meat), but eat very well 95% of the time.
I can't exercise much for health reasons, but I find stretching & core strength moves fit into my day, rather than stop for exercise is enough & much easier than setting time aside for an exercise regime. Things such as planked press ups against my kitchen workbench, when waiting for the kettle to boil, that sort of thing. I also swim when I can. My osteopath is surprised by my general fitness, which surprised even me given how little classic exercise I actually do, especially with lockdown & no swimming
I also lost a lot of what I guess was fluid with a course of candida treatment from my GP after a harsh lot of antibiotics for a gut infection left me with thrush everywhere. I was shocked to drop inches around my middle in weeks & it stayed off