Act as a certified fitness coach with 10+ years of experience in strength and conditioning. Provide a detailed guide on how to avoid overtraining for [BEGINNER/INTERMEDIATE/ADVANCED] athletes focusing on [STRENGTH TRAINING/CARDIO/HIIT]. Include specific signs of overtraining like [PERSISTENT FATIGUE/DECREASED PERFORMANCE/INCREASED INJURY RISK], and outline a recovery plan with [ACTIVE RECOVERY TECHNIQUES/NUTRITION TIPS/REST PERIODS]. Emphasize the importance of listening to one's body and adjusting [WORKOUT INTENSITY/FREQUENCY/DURATION] based on individual recovery rates. Offer actionable steps to balance training and recovery for optimal results.