The purpose of this study was to investigate the relationship between physical condition and daily sleep or food intake in children. Twenty two boys and twenty seven girls on the first grade of elementary school were participated as subjects. The body temperature was measured under the shoulder joint at wake up on every morning and the time of sleep down and wake up and the degree of food intake at breakfast and supper were recorded on the card for health observation of children during two weeks.
　As the result, the boys and girls showing high body temperature at wake up were lower in the body weight and rohrer's index and longer in the time length of sleep than one's showing low body temperature. It was, however, not found significant difference in the degree of food intake between these two groups.
　It may be esteemed that the children showing high body temperature at wake up are more active in day time than one's showing low body temperature.

DESCENTE SPORTS SCIENCE Vol.8/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE