So you're using, you want to use your energy on the climbs and then recover on the descents.

你希望在爬坡时消耗体力，然后在下坡时恢复体力。

In reality, this means about 600 people were preparing to embark on the climb, with permit holders accompanied by support staff up the mountain.

事实上，这意味着大约有600多人要准备登山，因为持有登山证的人，须经支持团队陪同上山。