It may seem impressive and brave when someone claims not to be afraid of anything, but it is more likely that they’ve suffered severe brain damage to one or both of their amygdalae. If you find yourself lacking the natural human emotion meant to ensure that you take the proper steps to preserve your life in dangerous scenarios, instead of bragging about it on social media, you should probably see a neurologist. A certain amount of fear is necessary, healthy, and normal.
Be afraid. Be a very reasonable amount of afraid.