A health study is carried out for 147 children, ranging from 5 to 14 years of age and who belong to a Physical-Sports Promotion Programme organised by the Town Hall of Güimar and Cabildo Insular of Tenerife. Around 50% of their size and weight was found to be over the 50 percentile of the Stuart and Tanner tables. The number of cavities per child was 1.85, with a 61.22% prevalence. The highest CAO value was among the 14 year olds and the highest co value among the 6 year olds. 5.4% had decreased visual acuity. The most frequent orthopedic alterations were scoliosis, 8.84% and flat feet, 22.29%. The Ruffier-Dickson test showed that 97.20% of the children had an above normal cardiac adaptability to exercise.