It’s no secret that Jennifer Lopez has an amazing body. The 48-year-old star is in perfect shape and people everywhere are dying to know her secret. While it may be true that she, like most celebrities, achieves her perfect physique thanks to the help of famous trainers, she puts in a lot of work on her end.

Now, her trainer, David Kirsch, has shared the secret of her perfect abs: side-plank oblique crunches. “It’s perfect for when you need to focus on shaping and toning not only the obliques but the entire core,” he says.

Check out the video below to learn how to properly execute a side-plank oblique crunch and start working on your dream abs!

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