Answer: Cardiovascular Endurance Training.
The lions symbolize<span> Santiago's lost youth as well as his pride (a group of </span>lions<span> is called a "pride"). ... Now that Santiago is no longer young, and has lost his friends, family, and strength, he sees the </span>lions<span> only in his dreams.</span>
It shows that the value of education can increase return on investment
Overall, this sentence seems correct to me.
