NEW! Outside TV show

Alex Honnold explores Nevada’s wild side

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NEW! Outside TV show

Alex Honnold explores Nevada’s wild side

Watch now

Anatomy 201: What’s the Difference Between Deep Core Strength and All-Around Trunk Stability?

Heading out the door? Read this article on the new Outside+ app available now on iOS devices for members! Download the app.

Are you recruiting your deep core along with your outer, movement-oriented muscles when you move? It can be challenging to discern! Try these exercises from Karin Gurtner will help you improve core strength, inside and out.