It’s known as myostatin, but it might as well be called kryptonite, because it’s what keeps each of us feeling like Clark Kent. This protein tells your muscles when to stop growing, and in the last few years we’ve seen two babies born with a mutant gene that prevents them from producing enough myostatin. The result? Super Babies. And like any amazing mutation, scientists are studying it to see if, and how, we could all become as muscle bound as these tots.

The first super baby was born in Germany in 2004. Though his name was never released, pictures demonstrated that his young physique contained almost twice as much muscle as other infants. Look ahead to fall 2005 in Michigan, Mr. and Mrs. Hoekstra adopt a young boy named Liam. Soon he is growing muscle at an astounding rate. Hanging on rings in an iron cross position by 5 months, pull-ups by 9 months, Liam is the second super baby. His condition, now known as myostatin-related muscle hypertrophy, makes him hungry, lean, and strong. Check out his pic after the break.

With Liam, scientists had further proof that a genetic mutation could exist that causes a human to naturally build muscle. Without even trying, Liam has little to no body fat, can lift seven pound weights arms extended (he only weighs 30 lbs himself) and has a six-pack. Now nearly four, Liam is taking gymnastic lessons, but this is more of an outlet for his energy than an explanation for his physique. No doubts, it’s the lack of myostatin that’s helping him get ripped.

The Protein to End All Proteins

Blocking myostatin has been shown to have drastic effects in animals besides humans. Myostatin tests in labs have pumped up mice to Schwarzenegger proportions.

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