Every sport has specific demands that it puts on our body. Whether your sport is a speed and power dominant sport (most sports) or you are an endurance athlete, it is important to understand these demands when attempting to condition your body. Common mistakes in sports conditioning are overtraining aerobic endurance, which will diminish many of the strength and power gains achieved in the off-season, as well as attempting to maintain conditioning levels for too long. Without getting into a discussion of bioenergetics, I will attempt to address many mistakes that occur when training to be “in shape” for your sport.