VIDEO : Keri Russell's Trainer Shares How The Americans Star Got That Killer Bikini Bod

Two words come to mind when looking at Keri Russell's bikini body this week: Hot damn! So, how does Keri stay in such great shape? Her personal trainer, Avital Zeisler, says "It is important that my students learn correct technique and concepts that are effective. I wanted her to come across authentic and showcase the combative training background that her character portrays in the show.