THE BLOCK OUT THE SUN BACK PLAN WILL TAKE YOUR BACK DAY TO THE NEXT LEVEL, IT WILL TARGET EVERY MUSCLE GROUP IN YOUR BACK, YOUR LATISSMUS DORSI, TRAPEZIUS, REAR DELTOIDS, ERECTOR SPINAE, RHOMBOIDS, TERES MINOR/MAJOR'S ETC GIVING YOU COMPLETE ACTIVATION, COMPLETE STRENGTH AND COMPLETE MUSCLE BUILDING POTENTIAL.. THE ONLY QUESTION IS, HOW HEAVY WILL YOU GO? (REST PERIODS/WEIGHTS ARE AT YOUR DISCRESION).