By today's standards I am not physically fit.  I like the definition of the industrial revolution: ability to carry out the day's activities without undue fatigue.  
That is crazy I guess I am not fit either but I just got a gym membership
Today the definition includes proper nutrition and sufficient rest as well.  I eat right, but I don't sleep! 
Oh I am the same way! I eat really healthy but I have sleeping problems! What other standards are there?
Well, your gym membership is good, because there is a relation between fitness and attractiveness that caused gyms to spring up in the last 30 years.
Oh I guess I haven't thought of how recently popular they have become. Have you tried crossfit?
I haven't, because I thought it was Olympic weightlifting?  I'm more of a Zumba gal.