Endogenous neuoprotection is a phenomenon where a brief episode of ischemia renders the brain resistant against a subsequent longer-asting ischemia event. Experimentally, the author was able to model hypoxic preconditioning in animal model. Increasing knowledge of this endogenous neuroprotectin by ischemic tolerance may help to minimize neuronal damage following ischemic stroke and hypoxic encephalopathy. This book is, therefore, the first overview of this important topic and will certainly influence further investigations in clinical and neuroscience research.