Excessive exercise can lead to various health problems, including overtraining syndrome, fatigue, and increased risk of injuries. When the body is subjected to high training volumes without adequate recovery, it can experience physical and psychological stress. This may result in disturbances in hormone levels, impaired immunity, and negative impacts on mental health. Signs of excessive exercise include chronic fatigue, decreased performance, and changes in appetite or sleep patterns. Balance and listening to the body are essential for long-term fitness success.