Like real MMA fighters, your fighter will experience Injuries throughout their career. In UFC 4, there’s a chance you’ll earn an Injury after a health event, such as a stun or KO. Injuries decrease your Attributes and can only be recovered by spending Evolution Points.
If you’re injured at Training Camp, you’ll need to spend time resting, or use Cash to recover. If you’re injured during a fight, it’ll affect your fighter’s performance and you’ll need to spend some time on the side lines between fights.