In honor of the new Superman movie, education channel Asap SCIENCE takes on the subject of muscle growth.

Everyone knows they must exercise strenuously to grow bigger and more powerful muscles, but how great of a role do our genetics play?

The truth is, everyone’s muscles have a built in limit, controlled by their myostatin levels. The lower your levels, the easier it is to grow new muscle tissue. 

Now, if we could figure out how to remove this gene, everyone could theoretically be Superman…