Sometimes bigger is better.  

Olympic Gold Medalist Lindsey Vonn took on SI Swimsuit Model Ashley Graham, who is pregnant.

RELATED: SI Swimsuit Announces One of Its Biggest Stars is Pregnant

The two hit up the gym,  and did some pretty high intensity workouts. 

Somehow Ashley Graham won. 

She went into serious beast mode. 

Flip the Page to see the Workout:  

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