Which factor will decrease in response to increased cardio respiratory fitness

Why is the first step in responding to life-threading situations to assess the situation?

How can the stress response be used in a way. for example to build resilience.

When a researcher debriefs her participants, she: provides a detailed explanation of the study. removes their undergarments. tells them they can stop taking part at any time. provides an detailed explanation of the study, and tells them they can stop taking part at any time.