爬山，尤其是陡的山，主要是无氧，非常 demanding 的，心跳会非常快。游泳练不出爬山的能力，或者说只有很小部分的帮助

Climbing is not a cyclic steady-state activity (which leisure swimming belongs to). Climbing is an acyclic anaerobic-aerobic activity

Slou9900 发表于 2023-04-11 15:27

爬山, especially scrambling, is hard.