"And there is such a thing as a decathlon high. It's like a rock rolling down hill, picking up momentum. You get better and better"

This quote by Dan O'Brien is describing the decathlon, a track and field event that includes 10 different disciplines. The quote is suggesting that the decathlon resembles a rock rolling down a hill, acquiring momentum as it goes. This is a metaphor for the decathlon, as the athlete improves and much better at each event as they progress through the competitors. The quote is suggesting that the decathlon is a difficult event, but with practice and devotion, the professional athlete can become a growing number of effective. The quote is also recommending that the decathlon is a satisfying occasion, as the athlete can get a sense of accomplishment and pride as they enhance their skills and efficiency. The quote is a reminder that with effort and commitment, anything is possible.