Self concept is best defined as a combination of self-image, self esteem and your ideal self. ... Your self concept can change on a regular basis because you see and interpret things differently depending on your feelings, beliefs and attitude.
The treadmill has a bunch of parts & pieces, and one of the most popular 'home fitness' exercise machine that requires the most maintenance. Maintenance of a treadmill would include: cleaning the motor cover, testing the stop/start button, checking lubrication, testing the tension belt, and tightening all the loose parts.
That is for the orange peel