The winners are being subjected to a grueling training campaign as the losers ridding the bus home.  As the bus stops unexpectedly, Coach Saitoh is waiting with Echizen and Kintaro; he is offering all the losers a chance to redeem themselves.
It would be prudent to preserve 
what energy you can.
El guardar un poco de energía es ser sabio.
Lo mejor es que no malgastemos nuestras energías.
É melhor economizar 
o máximo de energia possível.