As a reaction whenever you take any non-psychic damage, you can tap into the adrenaline within your human body and unleash your potential for 1 minute. During this, you gain resistance to all damage except psychic. Additionally, you have advantage on all ability checks and saving throws related to Strength, Dexterity, and Constitution. 

Also, whenever you take damage that would drop you below 1 hit point, roll a Constitution saving throw (DC 10). On a failure, you fall unconscious and Adrenaline Rush ends. On a success, the DC of this ability increases by 1, and you drop to 1 hit point.

Once this ability ends, any pre-mitigated damage you resisted because of this ability is dealt to you all at once.