Zone 2 (Z2) – sometimes called no man's land, this zone is just above 80% HRmax but is not hard enough to be a real quality session (>85% HRmax).

区间2（Z2）-有时称为“无主之地”。该区域刚好超过80%最大心率，但又不足以达到真正的高强度区（大于85%最大心率）。

youdao

Now that I have a job, I'm expected to bet real money at The Mahjong Table, a no man's land filled with hidden agendas, treacherous scheming and Janus-faced traitors.

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