That's great LG. The forties are actually great years physically. Gets a bit rough for women mid to late but by early fifties its all good again. The stronger you are in your 40's the easier it will be in your 50's when those primary sex hormones decide they are done with you. Muscle mass gets, ehem, challenging. Not impossible tho!
I think I intermittent fast. I usually only eat between 4-8pm. I do put half and half in my coffee tho...so guess its not fasting. Oh well. I think the idea that we need to eat every few hours is insane. I think on a biological level we are designed to go periods of time without food....the whole hunter/gatherer thing.
I guess its whatever works for each individual. If I ate every few hours I'd weigh 150 lbs.