编辑同志:我看到许多原来身材苗条的青年女性,生孩子后变得肥胖臃肿、行动迟缓,和怀孕前简直判若两人,我很担心生孩子后会出现这种情况。请问,如何预防产后肥胖?读者周华周华读者: Editor’s Comrade: I saw many young, slender women who became obese and bloated after childbirth. I had been slow to act as a child before I became pregnant. I was worried about this after I had children. I ask, how to prevent postpartum obesity? Readers Zhou Hua Zhou readers: