Dr. Mike Nelson shares his expertise on exercise intolerance after concussion, explaining that neurological limitations, not metabolic fatigue, are the primary barrier to resuming physical activity. The key difference is that your nervous system acts as a brake on performance, preventing your body from accessing its existing physical capabilities.
• Exercise testing should be individualized, focusing on symptoms rather than rigid heart rate parameters
• Different exercise modalities (rowing, biking, walking) can produce dramatically different symptom thresholds
• Morning heart rate variability (HRV) measurements provide objective feedback on recovery and exercise tolerance
• Repeatedly pushing past symptom thresholds creates negative neurological associations that worsen exercise tolerance
• Breaking the connection between exercise and symptoms may require changing equipment, environment, or exercise type
• Isometric exercises and proprioceptive training can help recalibrate the nervous system's response to movement
• Recovery isn't linear—success comes from tracking aggregate trends while accepting daily variability
• Focus on raising your "floor" (minimum exercise capacity on bad days) rather than chasing pre-injury performance levels
• Consistency in showing up for subthreshold exercise is more important than performance on any single day
For more information, visit miketnelson.com or listen to the Flex Diet Podcast.

Find Dr. Nelson on instagram @drmiketnelson
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Medical disclaimer: this video or podcast is for general informational purposes only, and does not constitute the practice of medicine or other professional healthcare services, including the giving of medical advice. No doctor patient relationship is formed. The use of this information and materials included is at the user's own risk. The content of this video or podcast is not intended to be a substitute for medical advice diagnosis or treatment. Consumers of this information should seek the advice of a medical professional for any and all health related issues.