Adrenaline - Midkemia Online Online Help
Adrenaline is a measure of how quickly you will react in battle. When your adrenaline is high, your attacks consume less balance and execute faster. When your adrenaline is low, the opposite occurs. You can build up adrenaline by attacking, and must spend it to heal yourself and cure afflictions during combat. Thus, when fighting it is always in your interest to maintain a sustained offense. Defending alone is almost certainly a losing battle. Adrenaline appears on your prompt as "A:50%" during battle. Thus, it is simple to tell when you are engaged in combat. Over time, your adrenaline naturally returns to its normal state (50%).