Celebrity personal trainer and star of NBC's hit seriesThe Biggest Loser graced the cover of this month's Men's Fitness. As a special treat for all you CrossFit enthusiasts and workout fanatics, here's an exclusive video of Bob's Workout of the Day that was featured in his cover story. Brace yourself. This 11-minute routine will have every muscle in your body begging for mercy.
When it comes to building muscle and torching fat, Bob Harper isn't such a nice guy.