Body Battery is a feature in Garmin that indicates your available energy based on activity, stress, sleep, as well as heart rate. Your score will be between 0 and 100. The score is higher when you are more prepared for training or performance.
Garmin’s Body Battery assists endurance athletes in training and recovery. It indicates how much physical or mental stress is drawing on your energy reserves and how rest and sleep can restore that. If your body battery is high in the mornings, then perhaps you might be able to complete a heavy workout. A low body battery can be a sign of fatigue. It assists athletes in training in such a way as not to overtrain or not rest adequately. While not infallible, it is useful in displaying how daily activities impact short- as well as long-term performance.
