The Rowing Team

Yeshiva University decided to field a rowing team. Unfortunately, they
lose race after race. Even though they practice and practice for hours
everyday, they never manage to come in any better than dead last.
Finally, the team decides to send Morris Fishbein, its captain, to spy
on Harvard, the perennial championship team. So Morris schlepps off to
Cambridge and hides in the bushes next to the Charles River, where he
carefully watches the Harvard team at its daily practices.
After a week, Morris returns to Yeshiva. "Well, I figured out their
secret," he announces.
"What? Tell us! Tell us!", his teammates shout.
"We should have only one guy yelling. The other eight should row."