I think a lot of the problem is moderation. Eating smaller portions. It’s why obesity is such a problem in the USA. I work in health care, I know.
Then you have the fact that people set in cubicles at work all day, and then go home and set in front of the TV all night.
Go to Japan. See how many fat people you see. Not many. They are active. They walk, they eat better.
My father has lifted and competed his whole life. He has so many physical problems because of it now. Surgeries to correct it. I saw what it did to him. The problem is people take exercise TOO FAR. Your body isn’t meant to do all that crap all the time. You aren’t meant to be like Mr Olympia, its not natural, and no…it’s NOT healthy.
Do cardio, ride your bike, do some small weight lifting, push ups, set ups, and stuff like Yoga, etc. THAT is what you need.
And no, smoking or “lighting up” something is NOT healthy. Period. You will “live longer” partly based on your GENETICS, not your over-all physical health.
Gain 75lbs and make your heart have to beat harder because of it, because for every 20 lbs more you weigh, your heart has to work harder. You won’t live longer doing that.