Early in the morning, Kirihito orders the club members to harvest seaweed and do many other strange things, like standing on an unsteady boat to improve their balance. The club members admire Kirihito's methods, but have doubts about his experience and abilities. They eventually confront him. In order to demonstrate his coaching abilities, Kirihito declares that he will have the rookie Mitsuhashi Kei beat the other club members.
This is going to strengthen 
the muscles we use for balance.
.سيقوّي هذا العضلات التي نستعملها في توازننا
Wir müssen die Muskulatur,
die man braucht,
Esto fortalecerá los músculos
necesarios para equilibrarnos.
Esto fortalecerá los músculos
necesarios para equilibrarnos.
S’entraîner ici nous aidera
à développer les muscles
Isto vai ajudar a desenvolver
os músculos que usamos para nos equilibrar.
Так мы растянем мышцы,
которые помогут нам держать равновесие.