Tell from physiological angle, teenage development generates sexual demand to certain level is normal phenomenon, if do not have sexual demand, have frigidity only, may be a kind of morbid state.

• 从生理学的角度讲，青少年发育到一定程度产生性需求是正常现象，如果没有性需求，只有性冷淡，则可能是一种病态。