I fast between 12-20 hours a day about 28 days of every month with usually only one day with more carbs and some sugary food and usually at least one period every month where I don’t eat anything for 24-36 hours
Once you get used to it you don’t really miss eating junk and it’s no big deal to skip a meal or two-in my mid 50s and have more strength energy and endurance than most men half my age -it’s not too late to get your body to operate differently
I started by eating between noon and 6 pm. I’m now mostly eating between 3 and 6 pm. Close to OMAD (One Meal A Day). I figure it is OK to eat some carbs if I only do so once a day and eat them with plenty of meat and fat.
Seems to work well for me. In my mid-60s. Run and lift weights too.
I fast from Sunday evening until Friday evening every week. I stopped doing this in 2019 when I was recovering from surgery, then WFH and COVID came. I started again the first of this year, and I am loving it once again.