VIDEO: Gisele Bündchen Challenges Jimmy Fallon To A Plank Workout, Schools The Funnyman In Fitness

It seems that supermodel Gisele Bündchen can put just about anyone to shame. As evidenced by her recent appearance on The Tonight Show With Jimmy Fallon. After a bit of encouragement from the audience, Gisele embarked on giving Fallon a mission on staying superfit by challenging him to do a plank.