Doctor Yessis answers the question at What Age Should You Start Specializing in a Sport?
<iframe width=”560″ height=”315″ src=”http://www.youtube.com/embed/b4M56H6qnug” frameborder=”0″ allowfullscreen></iframe>
Doctor Yessis answers the question at What Age Should You Start Specializing in a Sport?
<iframe width=”560″ height=”315″ src=”http://www.youtube.com/embed/b4M56H6qnug” frameborder=”0″ allowfullscreen></iframe>