We have witnessed the bravery of so many people during this COVID19 Pandemic. What makes people make such sacrifices to come out of retirement as a doctor or nurse, come to another state, leave their families and safety of their homes to help others?

Psychological Perspectives.

We have witnessed the bravery of so many people during this
COVID19 Pandemic. What makes people make such sacrifices to come

out of retirement as a doctor or nurse, come to another state,
leave their
families and safety of their homes to help others?

How do some people become champion athletes despite having
physical disabilities?

What causes someone to become anorexic, willing even to starve
themselves
to death?