The Muscles and the Fat (S01E20)
S01E20
Muscles make up nearly half of a person's body weight and require a significant amount of energy to function effectively.
Show
Once Upon a Time... Life
Episode
S01E20
Air Date
Jan 24, 1988
Season 1 Episodes
S01E01
The Planet Cell
S01E02
Birth
S01E03
The Body Sentinels
S01E04
The Bone Marrow
S01E05
The Blood
S01E06
The Tiny Platelets
S01E07
The Heart
S01E08
Breathing
S01E09
The Brain
S01E10
The Neurones
S01E11
The Eye
S01E12
The Ear
S01E13
The Skin
S01E14
The Mouth and the Teeth
S01E15
The Digestion
S01E16
The Liver Factory
S01E17
The Kidneys
S01E18
The Lymphatic System
S01E19
The Bones and the Skeleton
S01E20
The Muscles and the Fat
S01E21
Toxin Wars
S01E22
The Vaccination
S01E23
The Hormones
S01E24
The Chain Of Life
S01E25
Repairs and Changes
S01E26
And life goes on...