Subjective well-being is a good indicator of an individual's psychological health and general condition, but also a good predictor of later positive life outcomes. Adolescents who exhibit psychological difficulties are more likely to retain the same difficulties in adulthood. Being overweight and other risk factors that develop in adolescence, tend to continue later in life. Some studies state that due to insufficient physical activity, today's life expectancy is shortened for children and young people. Insufficient physical activity has become a global problem with all the consequences that insufficient physical activity brings with it. Increasing the physical activity of the world's population has become a global goal of the World Health Organization. Involvement in regular kinesiological activities contributes to a better general condition of the organism, better physical, mental and social functioning of the individual as well as higher levels of general satisfaction. High levels of subjective well-being were found in adolescents who are regularly physically active, who are less prone to negative emotions, they cope easier with life's challenges, their body mass index is lower and they show higher levels of life satisfaction. Prticipants in this study are adolescents from the territory of the Republic of Croatia, N = 756 of which 407 (53.8%) are handball players and 349 (46.2%) are adolescents from the control group. The research was conducted in primary schools and handball clubs with adolescents born in 2006 and 2007. The instruments used in this research are: Life satisfaction scale, Croatian versions of PANAS and HEXACO-PI-R, and a questionnaire on understanding the importance of kinesiological activities for present and future life. The results obtained by this study confirmed the results of similar studies. Adolescent handball players are more satisfied with life, show higher levels of positive emotions and lower levels of negative emotions in relation to adolescents who are not involved in some form of kinesiological activities. The uniqueness of this research is evident in the specifics of the respondents, handball players who play handball as amateurs, because according to available data, this group of respondents was not analyzed through elements of subjective well-being or HEXACO personality inventory. The personality traits of adolescent handball players and those who do not engage in kinesiological activities differ significantly in the domain of extraversion and emotionality. Handball players show significantly higher levels of extraversion and significantly lower levels of emotionality compared to the control group. In the other four dimensions, no significant difference was found between the groups. Handball players agree significantly more that training is an investment in the future, that it is necessary to work out to be healthy and that people who work out are less sick than those who do not engage in some form of physical activity. They are much less likely to agree that computer skills are more important than training and they would rather stay outside than play games. Predictor variables of personality dimensions explain a total of 29% of the variance of the Life Satisfaction criterion. The Agreeableness dimension also has a significant contribution at 1% and Conscientiousness at 5%. Predictor variables of personality dimensions explain a total of 25% of the variance of the Positive Affect criterion. The personality dimension of Extraversion and Agreeableness have a significant contribution to 1%, and at 5% the dimension of Conscientiousness. Slightly different results are described by the criterion of Negative affect. Predictor variables of personality dimensions explain a total of 23% of the variance of the Negative Affect criterion. All predictor variables except the Conscientiousness dimension have a contribution to the Negative Affect criterion. The variables Extraversion, Emotionality, and Honesty / Humility have a significant contribution at 1% (β = -0.19). The dimension of Agreeableness and the dimension of Openness (to experience) have a significant contribution at 5%. The data obtained by this study confirmed that the kinesiological activity of handball is associated with high levels of subjective well-being in adolescents who train regularly. It was also found that those adolescents who practiced handball regularly exhibited lower levels of Negative Affect compared to those who were not involved in some form of physical activity. Regression analysis found that certain dimensions of a handball player's personality make a significant contribution to the criteria that make up subjective well-being. The predictor variables Extraversion, Agreeableness, and Conscientiousness have a significant contribution to the criteria of Life Satisfaction and Positive Affect, while the contribution to the criterion of Negative Affect is significant for all predictor variables except the Conscientiousness dimension.