Mifune has increased the training for the junior high and high school students.  To sweeten the deal, he has offered both groups a valuable prize, and it’s going to be big.
The high schoolers sacrifice sleep
Los de preparatoria sacrifican el sueño y 
practican voluntariamente todos los días,
Se quitan horas de sueño y siguen entrenando a estas horas
Os colegiais estão sacrificando o sono