4.74$
A scientific book that sheds light on the causes of energy gain and the causes of its loss, and contains a large number of exercises and suggestions from leading personalities working in the business in order to reach your energy levels to a peak. The book aims to give the reader a wealth of practical ideas to use while working in accordance with his free time and includes a series of real case studies but while reading try to think about solutions to identify the leakage of energy and its springs in your life
