I am a pain physician focusing on chronic pain management. I joined this lesson hoping to learn the secret of giving exercise prescription to chronic pain patients. Now I am on the session of upper extremity. Unfortunately, this lesson seems to target return-to-training after acute injury, and this is not compatible with my expectation. I recommend that you can consider updating PEACE&LOVE principle for acute injury management in addition to POLICE or PRICE. Although PEACE&LOVE is not yet a guideline , but it stand for a paradigm shift for the concept of tissue recovery. On the other hand, ITB syndrome have been proved related to compression rather than friction. You can consider updating this part as well. As for technical issue, I personally wish your online videos provide functions of speed adjustment & subscriptions like Youtube. It would be more friendly to non-native English speakers. I am still on my way learning. I hope I will benefit from the following lessons. Happy new year.