The bird dog exercise is a go-to for strengthening your upper back, glutes and the muscles along your spine. Mandatory Credit: fizkes/iStockphoto/Getty Images via CNN Newsource

March 28, 2024

The bird dog exercise is a go-to for strengthening your upper back, glutes and the muscles along your spine.
Mandatory Credit: fizkes/iStockphoto/Getty Images via CNN Newsource

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