The purpose of this study was to investigate the results of questionnaire survey on self-evaluation about health, physical fitness and exercise of Thai students. Furthermore, it was to clarify the relationship between exercise custom, life-style and their physical fitness. The examinees were students of 14-years-old in Udon-Thani province (n=41 girls and 31 boys). The measurement items were height, weight, % of body fat, sitting-trunk-flexion, 50m-run, standing-long-jump and grip-strength. A questionnaire survey were 1) self-evaluation about health, physical fitness, and exercise, 2) exercise custom, 3) life-style. The results of this study were as follows : 1) Boys judged their condition for health and the physical fitness to be good or normal. Furthermore, they liked to exercise and to play outdoors. As for girls, the results of self-evaluation did not show a characteristic. In addition, the physical fitness did not accord with self-evaluation in boys and girls. 2) 90% of girls and all boys carried out exercise more than two days in a week. There were no significant differences between each measurement item and exercise frequency. 3) 43.9% of girls and 61.3% of boys had breakfast every day. 92.7% of girls and all boys slept more than six hours.
