BackGains

Anatomy & Science

Deep dives into back muscle anatomy, origins, insertions, and how each muscle group functions during movement.

Anatomical illustration of the complete back musculature showing all major muscle groups
Anatomy & Science

Back Muscles Anatomy: Complete Visual Guide

A full breakdown of every major back muscle — where each one sits, what it does, and how they all connect to your training.

Anatomical illustration highlighting the latissimus dorsi muscle on a muscular back
Anatomy & Science

Latissimus Dorsi: Anatomy, Function, and Training

Everything you need to know about the latissimus dorsi — the widest muscle in your body and the foundation of a strong, well-developed back.

Anatomical illustration of the trapezius muscle showing upper, middle, and lower regions
Anatomy & Science

Trapezius Muscle: Anatomy, Pain, and Exercises

The trapezius is one of the most overworked and misunderstood back muscles. Here is what it does, why it hurts, and how to train all three regions properly.

Anatomical illustration highlighting the rhomboid major and minor muscles between the shoulder blades
Anatomy & Science

Rhomboid Muscles: Anatomy, Pain, and Function

The rhomboids are small but critical muscles that control your shoulder blade position. When they are weak or tight, you feel it between the shoulder blades.

Anatomical illustration of the erector spinae muscle group running along the spine
Anatomy & Science

Erector Spinae: Anatomy, Exercises, and Pain

The erector spinae runs the full length of your spine and is involved in virtually every loaded movement you do. Here is how it works, how to train it, and how to manage pain.

Anatomical illustration of the upper back musculature including trapezius, rhomboids, and rear deltoids
Anatomy & Science

Upper Back Muscles: Anatomy and Training Guide

Your upper back contains the muscles responsible for shoulder blade control, posture, and pulling strength. Here is how to train every one of them effectively.

Anatomical illustration of the lower back musculature including erector spinae, multifidus, and quadratus lumborum
Anatomy & Science

Lower Back Muscles: Anatomy and Strengthening

The lower back is the most injury-prone region of the spine. Understanding which muscles support it and how to strengthen them is the difference between chronic pain and long-term resilience.

Illustration showing all back muscle groups working together during a pulling movement
Anatomy & Science

Back Muscle Groups: How They Work Together

Your back is not one muscle. It is a system of interconnected groups that pull, stabilize, and protect the spine in coordination. Here is how they work together and what that means for your training.