The First 20 Minutes, The surprising science of how we can exercise better, train smarter and live longer, by Gretchen Reynolds, Icon Books, London, 2013. For those of us retiring, the most important part of this book is the last chapter, “Conclusion,” in which the author describes the negative effects of sitting. Sitting for long periods of time can be an increasing problem as we age due to watching TV and other sedentary activities. Though we may think that reading, doing puzzles, or other mental activities are good for the brain, physical activity is just as important. The physical activity doesn’t need to be strenuous exercise, just movement like standing or walking around a desk to interrupt long periods of sitting. Movement improves mental capacity, mood, fitness, and longevity.
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