One yoga instructor on Instagram decided to break down once and for all what it actually looks like.

Watch the video here:

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Seattle-based yoga instructorRobin Martinagrees.

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By properly activating your core this way, you help protect yourlow back, Martin explains.

“We have a tendency to bend from the natural curve of our low spine.

“Lengthening the tailbone takes compression out of the lumbar spine (low back).”

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Instagram @roxanne_yoga

In addition, activating your transverse abdominis also helps protect the low back, she adds.

And here’s what the correction looks like.

Gan demonstrates what the tweak looks like in a few basic poses, like chair pose.

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Instagram @roxanne_yoga

Here’s the incorrect version.

And here’s a better example.

Here’s Warrior I shown without the correction.

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Instagram @roxanne_yoga

“This can apply to barre workouts, weight training, cycling, and so much more.”

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Instagram @roxanne_yoga

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Instagram @roxanne_yoga

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Instagram @roxanne_yoga