This is an amazing link. Stress and being compassionate have one similar trait. A hormone called Oxytocin. So we can actually transform stress into reaching out to others. Do spend some time watching.
When you choose to view your stress response as helpful, you create the biology of courage.
When you choose to connect others when under stress, you can create resilience.
Stress gives us access to our hearts.
The compassionate heart that find meaning and joy in other and yes the pounding of the heart gives us strength.