BIRMINGHAM, AL (WBRC)- It's become more common than ever before. Kids are doing additional training for school sports and fitness at a much younger age.

"All of them started sports at four," said Crossfit Alabaster owner Leigh Hulsey. "Fitness is a way of life because its part of who we are. If I'm going to teach my kids right from wrong, why wouldn't I teach them the correct way to...dead lift something? To me health and fitness is as important as right and wrong."

The Hulseys' family has a history of diabetes, so nutrition is an essential component to their fitness regime. But they are not the only ones training their kids at a young age.

"Weight training for kids has really evolved over the last 10 or 15 years," said orthopedic surgeon Dr. Lyle Cain. "We are in an age where patients are afraid of letting their kids get behind and not being specialized enough or not being trained enough."