A researcher in Sweden has discovered that a common congenital cause of menstrual disorder may help female athletes succeed by slightly raising their testosterone level. The study was the doctoral thesis of Magnus Hagmar, a postgraduate with the Department of Woman and Child Health at the Swedish medical university Karolinska Institutet in Stockholm. "What we're dealing with is just a tiny increase in levels, which can make it easier for the women to build muscle mass and absorb oxygen," said Hagmar. "This means that they might have got quicker results from their training and therefore been encouraged to train harder and more often,trx suspension trainer," he added. Hagmar said his finding could overturn old notions that strenuous physical activity such as in elite sports...