You don't need leg raises to strengthen your deep core muscles — I’m a personal trainer, and I prefer the 'in-and-out’ exercise

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A personal trainer shares why the in-and-out exercise is a worthy alternative to leg raises for strengthening your deep core and hip flexor muscles.

You don't need leg raises to strengthen your deep core muscles — I’m a personal trainer, and I prefer the 'in-and-out’ exercise : Read more