wo Seo are cultivated. Sports such es tumbling, pyramid building, cirous stunts, apparatus exercises, and so forth, are useful in developing general body control end power. Defensive and combative types of sports, such as football, nasbethall, teudng, eal wrestiing are used for developing orgunie endurance, persistent and aggressive attitudes and teamwork, Swimuing, diving, life saving, water polo, boating and canoeing, the environmental and specialized types of conditioning sports, are used for mster of the water. The recreative types such as tenis, golf, dancing, archery, bait and fly casting, bowling, baduinton, horsemanship, squash, camping, pingpong, quoits, and so forth, have their place in their fields. Calisthenics cannot be used to develop all types of physical fitness. Our view of plysical fitness must be broader. Calisthenios may pro- vide something of a general quality to physical fitness, but routine onlisthenic exercises must be supplemented by specific types of endurance feats in special areas, such as ruming, jumping, throwing, climbinz, awirming, veiilting, and specifies sports. Wilitery tactics should beincluded at this time. Calisthenios require mental concentration, while plays end games emphasize mental recreation. Dihenoen te ecb inant eaud te ee Dele. Athletic authorities have rated endurance most important over balance, flexibility, agility, strength and power. The most important way to develop endurance is - through hard work, repeated or constantly performed to the limits of one's ehility. More time is meded than is gensrally available or is commonly recognized. Short one-hour programs two or three times a week generally fail to make a significant contribution to endurance. In time of war the need for rugged youth and citizenry is paramount, Physical activity programs need to be inereased to inolude more of the following: