Possibly the hardest working athlete in mixed martial arts, UFC lightweight Sean Sherk trains for his fight with Tyson Griffin at UFC 90. This 4 round circuit workout emphasizes functional strength and cardio. This is the training that allows Sean Sherk to dominate fights that drag past the 15 minute mark. posted on 12.23.08

Possibly the hardest working athlete in mixed martial arts, UFC lightweight Sean Sherk trains for his fight with Tyson Griffin at UFC 90. This 4 round circuit workout emphasizes functional strength and cardio. This is the training that allows Sean Sherk to dominate fights that drag past the 15 minute mark.