Stamina

Stamina is a gameplay mechanic found in the game Oddworld Stranger's Wrath. In the game you can use your Stamina (located underneath the health bar in blue) with the Shake it off ability to heal yourself at the expence of using it, though this regenerates over time and can be recharged quicker by bountying enemies. Meaning you can enter any battle at full health, however this does not necessarily mean that this makes the game easy as enemy attacks can still cause a lot of damage.