The potential risk of overtraining without adequate recovery includes increased chances of injury, fatigue, and decreased performance. Overtraining can lead to mental burnout, diminished motivation, and feelings of stress. Physical symptoms may also manifest, such as persistent soreness, insomnia, or an elevated heart rate. It's essential to implement rest days and listen to the body to prevent these negative outcomes. Recovery allows muscles to repair and strengthens overall performance, making it a vital component of a balanced training program.