Spark

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The author attempts to explain for the layman, but ends up using masses of neurological jargon and acronyms, about the role exercise plays in sharpening our mental processes. The Framingham Heart Study followed nine hundred people for nine years and found that those who ate three meals with fish oil per week were half as likely to develop dementia. However, I really cannot say that I feel mentally sharper, or significantly calmer, or even less anxious than I did before.

The authors introduce the essentials of data science and the modern Hadoop ecosystem, explaining how Hadoop and Spark have evolved into an effective platform for solving data science problems at scale. Because of my age I have particular interest in quotations from the book regarding issues related to aging. The explanation of the stress response really brought together and cleared up a few other things I had read about how stress affects your body. All these structural changes improve your brain’s ability to learn and remember, execute higher thought processes, and manage your emotions.When everything is balanced, insulin works against the buildup of amyloid plaque, but too much encourages the buildup, as well as inflammation, damaging surrounding neurons.

The degree to which you can prevent the loss is impressive: one study found that women can double their leg strength in just a few months of weight training. We're descendants of hunter-gatherers who were optimized over thousands of years by evolution to walk and run around the equivalent of many miles per day (i. One of the problems of getting older is the lack of challenges, but with exercise we can continually improve and push ourselves.Rats with toys, obstacles, hidden food, running wheels, and socialization had different brain structure, faster learning, and more brain mass than rats in boring cages. Ultimately, Spark is an important book, but one that is a slog unless this issue is one that fascinates you. The following is an extended excerpt from the book (pages 233-237) where the author summarizes the ways in which exercise mitigates the human aging process. In Spark in Action, you’ll learn to take advantage of Spark’s core features and incredible processing speed, with applications including real-time computation, delayed evaluation, and machine learning. In Spark, John Ratey explains why the benefits of exercise to the heart, lungs, and muscles, are secondary to the benefits of exercise to the brain.