Quick Recovery

Your physical and mental recovery is much swifter than most.  You gain the following benefits:

Increase your Constitution score by 1.

You have advantage on death saving throws.

When you have fewer than half your hit points remaining, you can use an action to spend a number of hit dice up to your proficiency bonus, and immediately recover hit points as if you finished a short rest.  You cannot use this feature again until you finish a short or long rest.