Please note: This is a companion version & not the original book. #1 The perceived rate of exertion is the amount of exertion you feel yourself doing. It is different from your actual rate of exertion, which is the amount of exertion you are doing. Your PRE is the amount of exertion you sense yourself to be doing. #2 Your PRE is what you feel like you're doing regardless of what you're actually doing. The emphasis of ChiRunning is to set yourself up so that there are no blocks and your energy can freely flow through your body. #3 Running is a great way to get outside and exercise, while also improving your cardiovascular health and stamina. It is inexpensive, requires minimal gear, and can be done almost anywhere. #4 The most common theory about runner's injuries is that they are caused by overtraining. I believe this to be a myth, as the primary cause of injury is poor running form and biomechanics

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