Aim of this research: Discover 10-11 classes students’ physical activity motivating factors. Objectives: 1. Set the 10-11 class girls physical activity motivating factors. 2. Set the 10-11 class boys physical activity motivating factors. 3. Compare 10-11 class students physical activity motivating factors by gender. MAIN RESULTS Kaunas city school teens physically active is due to the fact that it helps to control weight on appearance and attractiveness and desire to experience joy. Both girls and boys the main reasons of physical activity is the desire to look beautiful, lose weight and maintain a graceful shape. Boys, unlike girls to suffer the embarrassment between physical activity or sport is to provide additional motivation to be phys...