Part of the masculine survival mentality is knowing one’s limits and being aware of danger; situational awareness. For anyone who feels that they need to beef up on the very basics of self-defence, beyond physical techniques, have a look at this website, which is full of goodies:
https://www.nononsenseselfdefense.com/
If you spend a couple of hours reading articles at this site it could save your life. In a nutshell, learn the signs of trouble, always keep in an alert, but relaxed mode of awareness, and know your limits. In war, I have killed men, and have the PTSD that comes with it, but this experience has indicated to me how truly frail humans are. We die very easily. The experience from both sides is very unpleasant and to be avoided.

