AEROBICS could help women suffering postnatal depression, Birmingham boffins have announced. ADELE has revealed she had postnatal depression after giving birth to her son and felt like she had made "the worst decision of my life". Postnatal period is the period when women readjusting physiologically and psychologically to motherhood. Postnatal psychiatric disorders and postnatal period have long been the popular areas of research. Stages of development will be correlated with important events during postnatal development (PND) in the male rat i.e.