In this paper, We compare the behaviors of the seniors with those of the sophomores of various kinds of specialties (arts, science, engineering, medicine and agriculture)in the colleges and universities of Hunan Province, in respect of body growth, aerobic & anaerobic working ability and physical activities. We find that as for the body growth, the seniors have superiority over the sophomores both in height and in weight; that the seniors have inferiority to the sophomores in the aerobic working ability, which is the case especially with the females, but the seniors have no difference with the...