What about the ballerina height

And is that the expected weight of a ballerina that is playing is something about 57kg, could a the ballerina be that weight with a lot of height? The ballerina can't have an anorexic weight. Why the weight is 57kg, because if she plays a role with a partiner lifting her, a man could manage that without short his ballet life with column problems, ballet is an art and have some health rules, and the weight of the ballerina is if she wanted dance with a partner, the ballerina doesn't need live in that weight, the expected is that when she be called to that role is that she, be able to aquive that weight during the trainnnig but before star the part that she would be lifted by the partner, 3kg is very fast lose in one weeek of trainnig, and if is months? Rute Bezerra de Menezes Gondim