On the fourth hour of 'Today' (weekdays, 7AM ET on NBC), Kathie Lee Gifford and Hoda Kotb host the show while working out on stationary bikes as a way to encourage exercise among viewers. Seth Rogen, who drops by to promote 'The Green Hornet,' also climbs aboard a bike and similarly feels the burn.
However, Rogen's exercise machine seems a tad unstable at first. "There's a serious threat going on here," he said, while his bike's seat wobbles back and forth.
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