0_Apprentice
I enjoy exercise, but I need to do more research about physical fitness.
1_Wizard
It is a state of well-being, health and the ability to participate of sports, occupations and activities.
0_Apprentice
Indeed. I used to run in college, but then I started having trouble with my knees. What else might I try?
1_Wizard
I was a tennis player but that is bad on the knees. Physical fitness is generally thought of as proper nutrition, exercise and an adequate rest period.
0_Apprentice
So it's a combination of those things and not just exercise?