I believe physical fitness is not just body but health as well
I agree. It helps with a lot of things. I think it helps with confidence in oneself too.
yes, physical fitness is often achieved by proper diet, rest, and activity
I try to get exercise every day, especially as I get older I realize how important it is.
Yes, me too, it is funny to think that before the industrial revolution fitness was defined as being able to go through the day's activities without fatigue, I guess that was before we sat on out rears on a computer working
It has definitely come a long way from that.  It's very popular now.
Yes, it has, but some I think is just vanity too, categorized as fitness and attractiveness