Doing core before you start clocking miles can save you time and help you run more efficiently.

Here's the ab exercise to add to your routine.

Looking for a quick ab workout to fire up your core? This seven-minute intense ab challenge targets your lower abs with no equipment. To find out for myself, I unrolled my yoga mat and gave it a go ...

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Add Yahoo as a preferred source to see more of our stories on Google. Training your core is more than just ab training, and should also involve working your hips, back, and learning more about ...

Whether you're preparing for a fitness test, looking to increase your running performance, or simply seeking a challenging and effective way to train, this dynamic workout delivers. By combining ...