1. We must use the muscles to make them grow large and strong.

2. Exercise should be taken regularly.

3. Exercise makes the muscles strong, the body beautiful, the lungs
active, the heart vigorous, and the whole body healthy.

4. Things we ought not to do: To run or play hard just before or after
eating; to strain our muscles by lifting too heavy weights; to exercise
so violently as to get out of breath; to lie, sit, stand, or walk in a
cramped position, or awkward manner; to wear the clothing so tight as to
press hard upon the muscles.

5. Good food is necessary to make the muscles strong and healthy.

6. Alcohol makes the muscles weak, although at first it makes us feel
stronger.

7. A boy who uses tobacco will not grow as strong and well as one who
does not.

8. The use of strong tea and coffee may injure the muscles.




CHAPTER XXII.

HOW WE FEEL AND THINK.