Bruce Algra's Back Extension Poster displays an array of exercises to strengthen and tone your back. It uses specific colors to show which muscles groups are being engaged during the back extension exercises. The images give step-by-step directions that show how to maximize your workout and use the machines correctly.
The Muscle Guide Male Poster displays a front and back image of the different muscles of the male physique. The poster breaks down the male muscular structure by colors and provides suggested exercises for each muscle group. Along with this information, the poster also provides you with the name of the muscle groups.