Are You Really Overtrained? What the Evidence Actually Shows (barbellmedicine.com)

• No controlled study has experimentally confirmed overtraining syndrome.
• Symptoms often result from inadequate recovery or improper training.
• Objective metrics like heart rate variability are useful for monitoring.

"After two decades of research, no controlled study has successfully produced overtraining syndrome under experimental conditions. This article examines the lack of evidence for classic overtraining and offers practical alternatives for recovery and training management."