100% of 2 Pros
I believe a common mistake is not being fully aware of anatomy, biomechanics and goals of your intervention/ suggestions. Every client is different, and using the same routine to address every clients issue is a very common mistake. Exercise specialists must have a thorough understanding of muscles and joints and how movement applies to their clients problems or goals. The best way to address this is to read, review other experts, research and never stop learning about your profession and how to improve your knowledge!