Exercise and fitness is really hard work, not only boring, but also very tired, so people who can persist are great.

When reading, I don't feel energetic after every exercise. I just want to lie down and never move again.

What's more, sports students run endlessly in the scorching sun and biting cold wind. Every lap is the end, and every lap is a new starting point. Sports students are exuberant in youth and running wildly, but only they know the hardships and tiredness behind them.