A4 = 432 Hz
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arvard happiness expert Shawn Achor says just calling, emailing or texting a friend and putting an event on the calendar is more powerful than you think. At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem re
arvard happiness expert Shawn Achor says just calling, emailing or texting a friend and putting an event on the calendar is more powerful than you think. At vero eos et accusamus et usto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem re
