By all means cultivate this and in every form possible, but even here have
an eye to moderation. Do not develop your heart and lungs to such an
extent that, when you have taken up a more sedentary life later, they will
suffer a reaction. Almost all the great athletes suffer a few years'
discomfort while adjusting themselves to a less athletic existence than
was theirs in college. Therefore, be moderate and specialize in this, so
that in after life you may do what you are best fitted for, and in the
attainment of athletic success make a test case of your proficiency of
attainment. Do not fear to be prodigal of energy concentrated on the right
thing.