It's never too early to teach a child to throw a baseball properly.
Contradicting many myths, the American Sports Medicine Institute in Birmingham, Alabama, studied how people throw baseballs and found that there's really no difference in the throwing motion that relates to age or bone and muscle development.
Adults throw harder because they're bigger than children and have longer arms, but the techniques are the same. That means that children can learn pitching techniques while they're still young.
And because proper pitching techniques make better pitchers and reduce the risk of arm and shoulder injuries, the best time to start is very early, the study concludes.