Being efficient means being able to do daily activities with the least amount of effort.
A fit person is able to perform schoolwork as well as responsibilities at home and still have enough energy and vigor to enjoy school sports and other leisure activities.
A fit person has the ability to respond to normal life situations such as raking the leaves at homes, stocking shelves at a part time job, or marching in the band at school.
A fit person also has the ability to respond to emergency situations such as running to get help or aiding a friend in distress.
As a child you were probably very active and thought little about improving or maintaining your fitness.
However, most people become less active as they grow older.
Developing a personal plan for regular physical activity can help you keep your activity level high and avoid sedentary living.