<p/><br></br><p><b> About the Book </b></p></br></br>Upton Sinclair was not only a prolifc and much admired author, but also a follower of Bernarr MacFadden's Physical Culture movement (see his Physical Culture Cook Book, 1901) and a member of the editorial staff of Physical Culture Magazine. Dedicated to MacFadden, this 1911 volume advocates the benefits of systematic fasting in producing long-lasting health benefits.