👉 Underback is a term used in the field of sports science and medicine to describe a situation where an athlete experiences pain or discomfort during training, particularly when compared to their pre-training state. It can be caused by various factors such as muscle strain, injury, overtraining, lack of adequate rest, or other physiological changes that occur during physical activity. Underback is often considered a sign of undertraining and indicates that the athlete has not received enough rest and recovery time before their next training session. It
