In yet another experiment, the researchers repeated the anagram tests, the mazes, and the monetary rewards with a different set of students, but then they added a wrinkle: After rewarding themselves from the envelopes on their desks, the students had the opportunity to donate some of their winnings to National Public Radio.
When students are growing antsy at their desks and need to get some physical exercise to let off some steam and reboot for more learning, they have the autonomy to go to the gym and work out.