'Looking to strengthen your quads and hamstrings? Fitness Instructor for Zone Fitness, Adon English, demonstrates the best way to perform the simple lunge exercise. Why not give it a go?' 

Tags: fitness , Workout , exercise , lunges , exercise video , zym , zone fitness , firness instruction

SEE ALSO: physical fitness , video , women s fitness , pi , Lose Weight Fast , 30 minute workout , Workout , Rogue , personal trainer , workouts