Efficient Metabolism

You always had the better genes. While others worried about gaining weight, or fail with putting on muscles, the metabolism of your body has allowed you to be the peak of your race, making best use of whatever nutrients it received.

Should you need to eat in order to sustain yourself, you only require half the amount of food as normal.
When you roll a Hit Die to regain hit points, the minimum number of hit points you regain from the roll equals twice your Constitution modifier (minimum of 2).