Running speed, heart rate, and ratings of perceived exercise intensity were all well correlated with the talk test results.
谈话测试能够反映出锻炼者的跑步速度、心跳速率，能感觉出锻炼强度是否过高。
2
Your heart rate during running rises and falls in a very predictable manner, and because of this you can use it as a gauge for different levels of running intensity.
你在奔跑时心率的起伏是可以预测的，因此你可以将它作为估计你跑步强度的一种参照工具。
3
When Keller and his colleagues asked 500 people to rate a panel of 66 odors for intensity and pleasantness, they gave the full range of responses—from weak to intense and from pleasant to unpleasant.