Benefits: This is a combat feat that scales with your Base Attack Bonus. * +0: You gain a +3 bonus to your Fortitude Saves. * +1: You die at -20 instead of -10. * +6: You gain 1 hit point per level. * +11: You gain DR of 5/-. * +16: You are immune to the fatigued and exhausted conditions. If you are already immune to these conditions, you gain 1 hit point per level for each condition you were already immune to.