HIIT & Run
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Box crunches, oh how they burn!! I went looking for a video to share that demonstrates them, but I was fairly unsuccessful finding one. Maybe they are called something different.

I do them on my kitchen counter and extend my legs out until they are straight (and much faster than this guy). I did sets last night until muscle failure and am feeling it today for sure. They are a great variation to the ho-hum core exercises.

Do you have a secret weapon exercise for targeting the core?

#exercise #core #workout #abs

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