To start each day, you switch on your core muscles to sit up in bed. Surely, then, you'd think exercises designed to strengthen this area should come as second nature? Unfortunately, this isn't always ...

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Core training has always been part of military PT and fitness testing. From crunches to sit-ups, flutter kicks, leg tucks and plank poses, the U.S. military uses many exercises to test core strength.

Your core is the central part of your body that supports and protects your spine. The abundance of ‘abs’ exercises definitely have their place, but the core muscles are more than just your abs, also ...

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