Kate Upton's trainer, Ben Bruno, periodically posts YouTube videos of the supermodel's workouts, which he says "are not for the faint of heart."
The latest clip went up just a few weeks before Sports Illustrated unveiled the cover for this year's Swimsuit Issue, which has three different versions, all featuring Upton.
Here's Upton performing the Assisted 1 Arm/1 Leg Row, which Bruno describes as a "full body exercise that also works the glutes, hamstrings, hip stabilizers, and core, giving you a great bang for your buck."
Previous workouts include ...
Landmine Box Squats
Band-Resisted Hip Thrusts
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