You have a strong heart and an almost unstoppable bravery. You are hard to scare and you don't back down easily. The trait can be used every time you try to do something heroic such as going up against bad odds or being greatly outnumbered.
The line between heroics and idiocy is thin, but in order to benefit from this trait it has to be something inherently risky and the deed has to be made for someone else, not selfish reasons.