PHILADELPHIA (CBS) – Summer is coming, but did you know that kids are actually less healthy during the summer season?

The American Academy of Pediatrics in conjunction with the YMCA just released a study that claims kids are not only vulnerable to forgetting what they learned in school, but also to weight gain.

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The study says parents want help to prevent what’s called the “summer slide.”

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YMCA’s across the country are reportedly helping them out with a free event called Healthy Kids Day, which is free to everyone and boasts creative activities for kids to help keep them healthy and happy in the summer.

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Healthy Kids Day is taking place at some YMCAs across the country on April 25th, but dates and times vary, so check your local facility for more information.