How To: Improve your back and core with speed rows

You can always spot a rower because their upper bodies are like God's gift to women - perfect, broad shoulders, rippling abs, and capable arms. But you don't have to be on your college's rowing team to have a chiseled, Thor-like upper body.

Try this exercise, composed of fast rowing movements, to get the same effects.

Coach Nick Tumminello, Baltimore personal trainer, shows you how to get a killer back workout.