Back is huge muscle group with multiple big and small muscles

Muscle Groups

Hypertrophy Training Volume: How Many Sets to Build Muscle?

Back Muscles: Anatomy, Function, Treatment

15-Minute Back And Bicep Workout - 10 Back And Arm Exercises

3 Killer Chest & Back Workouts For Building Muscle - Onnit Academy

How to tell which of your muscles are disproportionately small - Quora

5 Largest Muscles in The Body & How to Strengthen Them

Main Muscle Groups: Exercises for Each Muscle Group

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Agonist & Antagonist Muscles: Definition & Exercises

How Many Exercises Per Muscle Group? The Definitive Guide - Levels

The Best Workouts to Build a Bigger Back

Difference between lean muscles and bulk muscles - Times of India

Is the back the largest muscle in the body? - Quora