how to remain healty with exercises

Hi, 

   Now with health topic, this topic is about how to maintain a good health. I saw plenty of people and i heard that no one actually takes time to think about their health, eating too much food, like an oily food as much as they eat a junk food in the market or from a restaurant, they always life is never good with having a fat, well in an answer, they do this by mistake. Here is what i found to be healthy and comfortable.  It's time to say you that  by doing exercise we can be fit, you must have half an hour minimum on your daily routine life, time to do a complete or not  but you must do an exercise to remain healthy, If you see poeple maintain their diets by eating a normal food, try to avoid a junk food, you can eat vegetables which are good for health. But don't eat it too much try to feel a little hunger, that can help your digestive system good, which makes you healthy and whealthy, because when we do this regularly then the world can be fit and fine with a good health. So what are you waiting for? Stop eating the junk food and always do walk after eating a food. Thank