1AL-Qasim Green University, Iraq
2College of Engineering, Al-Nahrin University, Iraq
3Al-Mustaqbal University College, Iraq
The research problem is an attempt to answer the following questions; is there any effect of training loads under the maximum in Serotonin level? And does increasing serotonin level leads to increase happiness? While the aims of the research were to prepare the happiness measure, and the preparation of training exercises without the maximum. The sample of the research contained the players of Al-Qasim Sports Club, the youth of volleyball, through the research sample, the differences of the test of the experimental and control groups have been known with the variables of the research that has studied, this study ended with some conclusions and recommendations.
Preparation, exercises, physical variables, happiness and Serotonin
