Muscles

Introduction

Different types of muscles

Healthy muscles

Exercise and muscles

Skeletal muscles

Inside a muscle

Muscle attachments

Working muscles

When a muscle contracts

Athletes' muscles

Bodybuilding

Muscle problems

Muscles of the face and head

Chest muscles

Heart muscle

Abdominal muscles

Internal involuntary muscles

Arm and hand muscles

Muscle diseases and problems

What can go wrong with the muscles?