If your main goal is to train for an endurance event, say, a half marathon, you would be aiming to train at the 70 to 80% Max heart rate zone.

如果你的目标是参加耐力赛，比如半程马拉松，你就应该在70 - 80 %最大心率区间训练。

youdao

If your main goal is to train for an endurance event, say, a half marathon, you would be aiming to train at the 70 to 80% Max heart rate zone.

如果你的目标是参加耐力赛，比如半程马拉松，你就应该在70 - 80 %最大心率区间训练。

youdao