《极限运动员》是一款体育类动作游戏，游戏中可以选择滑板、单车或沙滩车来进行挑战，安全到达终点后才能进入下一关。
文章中提到了多少种极限运动员或探险家？
How many kinds of extreme athletes or explorers are mentioned in the passage?
极限运动员消耗大量能量来分解、修复和塑造肌肉。
Extreme athletes expend lots of energy breaking down and repairing and building muscles.
如果你像美国疾病控制与预防中心建议的那样，每周适度锻炼150分钟，或者少于150分钟，你可能就不是一个极限运动员。
If you're moderately exercising for 150 minutes a week, as the Centers for Disease Control and Prevention recommends, or less than that, you're probably not an extreme athlete.
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