- Physiologists are interested in the workings of the human body .
- The thermonuclear reactions of the sun energize the human body .
- The natural instinct of the human body is to throw out all invaders .
- At the age of twelve years , the human body is at its most vigorous .
- At the age of twelve years, the human body is at its most vigorous .
The human body is the entire structure of a human organism, and consists of a head, neck, torso, two arms and two legs.