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This volume, written by a physician who understands both the scientific background and the practical approaches to physical fitness, is in refreshing contrast to some of the popular literature that has appeared on the subject in recent months. The current, heightened interest in fitness has evoked a rash of articles and some books dealing with its various aspects. Unfortunately, the content of many of these has been conflicting and confused, and has perpetuated among the public misconceptions about fitness. A cogent example is the implication that exercise programs can change selective service rejection rates when, upon a moment's reflection, it becomes obvious that the causes for rejection have little or nothing to do with physical activity.
How to Keep Fit and Enjoy It is a clearly written and scientifically based book containing sensible advice for the large proportion of our population over 30 years of age. Dr. Guild feels it
Hein FV. How to Keep Fit & Enjoy It; a Step-by-Step Approach to Fitness After 30. JAMA. 1962;182(1):99. doi:10.1001/jama.1962.03050400101038
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