If you really want to live a longer life eat every other day. There is no reason to eat food everyday. Our bodies are not designed to eat massive amounts everyday, thats why we have a huge problem with diabetes. We store fat for a reason. We are meant to go long periods of time without food.
Every animal on earth will have their lifespan increased significantly by calorie restriction.
To put it simply eating = aging.
the most important thing is to live for long time is taking rest because if you work hard then your body and mind will really tired then your health problems are also been increased that's why taking rest important to live long period of time.