Myostatin deficiency causes uncontrollable muscle growth. It is a genetic condition in which myostatin, a protein that acts as a negative regulator of muscle growth, is produced in little to no quantities.

r/damnthatsinteresting

Pullups 5 Year Transition Of Progress

r/roastme

21M, never had a girlfriend despite making a lot of efforts. Make fun of me.

r/wtf

This one's for the ladies!

r/wtf

What are those?

r/funny

Gym Rats

r/beamazed

Muscle mass and strength are not the same thing!

r/thatsinsane

This 130KG transformation

r/beamazed

The shape shifter

r/beamazed

The power of consistency

r/thatsinsane

Bodybuilders look like little toddlers next to Strongman

r/wtf

Giant zit? WTF

r/interestingasfuck

Bodybuilder Jackson Schop competing even though he has a paralyzed arm