The Bad News: Injuries can happen. Aches, muscle fatigue and soreness are part of life for active people and those involved in athletic endeavors.
The Good News: Most injuries are preventable, and are often a result of overtraining and repetitive stress.
Overtraining symptoms bear much resemblance to chronic fatigue syndrome; body aches, tiredness and feeling flat or uninterested in training. The expression often used to sum up overtraining injuries is "too much, too soon.” Another one is "too far, too fast."